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Dropdown Menu onClick cho blog, website

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Dropdown Menu onClick cho blog, website.

Vừa rồi tìm trên mạng được bộ menu này. Nhân đây chia sẻ cho mọi người cùng dùng. Nếu là menu on hover thì chỉ cần làm bằng CSS là ok khá đơn giản. Nhưng menu on click thì có vẻ chỉ dành cho những ai am hiểu js. Nếu không thì chỉ cần down về dùng là được.



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Cách thêm vào web blogger :

1.Thêm CSS. Nếu bạn ngại phải chọn từng demo thì thay vì vậy bạn add hết CSS vào web blog của mình. Thêm CSS vào trước ]]></skin>


/* DEMO 1 */
.wrapper-dropdown-1:focus .dropdown {
    opacity: 1;
    pointer-events: auto;
}
.wrapper-dropdown-1:focus:after {
    border-color: #9bc7de transparent;
    border-width: 6px 6px 0 6px ;
    margin-top: -3px;
}
/* DEMO 2 */
.wrapper-dropdown-2:focus .dropdown {
    opacity: 1;
    pointer-events: auto;
}
.wrapper-dropdown-2:focus:after {
    border-width: 0 6px 6px 6px;
}

/* DEMO 3 */
.wrapper-dropdown-3:focus .dropdown {
    opacity: 1;
    pointer-events: auto;
}

/* DEMO 4 */
.wrapper-dropdown-4:focus .dropdown {
    opacity: 1;
    pointer-events: auto;
}

.wrapper-dropdown-4:focus:after {
    border-width: 0 6px 6px 6px;
}
/* DEMO 5 */
.wrapper-dropdown-5:focus {
    border-radius: 5px 5px 0 0;
    background: #4cbeff;
    box-shadow: none;
    border-bottom: none;
    color: white;
}
.wrapper-dropdown-5:focus:after {
    border-color: #82d1ff transparent;
}
.wrapper-dropdown-5:focus .dropdown {
    border-bottom: 1px solid rgba(0,0,0,0.2);
    max-height: 400px;
}
/*  Font Awesome
    the iconic font designed for use with Twitter Bootstrap
    -------------------------------------------------------
    The full suite of pictographic icons, examples, and documentation
    can be found at: http://fortawesome.github.com/Font-Awesome/
    License
    -------------------------------------------------------
    The Font Awesome webfont, CSS, and LESS files are licensed under CC BY 3.0:
    http://creativecommons.org/licenses/by/3.0/ A mention of
    'Font Awesome - http://fortawesome.github.com/Font-Awesome' in human-readable
    source code is considered acceptable attribution (most common on the web).
    If human readable source code is not available to the end user, a mention in
    an 'About' or 'Credits' screen is considered acceptable (most common in desktop
    or mobile software).
    Contact
    -------------------------------------------------------
    Email: dave@davegandy.com
    Twitter: http://twitter.com/fortaweso_me
    Work: http://lemonwi.se co-founder
    */
@font-face {
  font-family: "FontAwesome";
  src: url('../font/fontawesome-webfont.eot');
  src: url('../font/fontawesome-webfont.eot?#iefix') format('eot'),
  url('../font/fontawesome-webfont.woff') format('woff'),
  url('../font/fontawesome-webfont.ttf') format('truetype'),
  url('../font/fontawesome-webfont.svg#FontAwesome') format('svg');
  font-weight: normal;
  font-style: normal;
}
/*  Font Awesome styles
    ------------------------------------------------------- */
[class^="icon-"]:before, [class*=" icon-"]:before {
  font-family: FontAwesome;
  font-weight: normal;
  font-style: normal;
  display: inline-block;
  text-decoration: inherit;
}
a [class^="icon-"], a [class*=" icon-"] {
  display: inline-block;
  text-decoration: inherit;
}
/* makes the font 33% larger relative to the icon container */
.icon-large:before {
  vertical-align: top;
  font-size: 1.3333333333333333em;
}
.btn [class^="icon-"], .btn [class*=" icon-"] {
  /* keeps button heights with and without icons the same */
  line-height: .9em;
}
li [class^="icon-"], li [class*=" icon-"] {
  display: inline-block;
  width: 1.25em;
  text-align: center;
}
li .icon-large[class^="icon-"], li .icon-large[class*=" icon-"] {
  /* 1.5 increased font size for icon-large * 1.25 width */
  width: 1.875em;
}
li[class^="icon-"], li[class*=" icon-"] {
  margin-left: 0;
  list-style-type: none;
}
li[class^="icon-"]:before, li[class*=" icon-"]:before {
  text-indent: -2em;
  text-align: center;
}
li[class^="icon-"].icon-large:before, li[class*=" icon-"].icon-large:before {
  text-indent: -1.3333333333333333em;
}
/*  Font Awesome uses the Unicode Private Use Area (PUA) to ensure screen
    readers do not read off random characters that represent icons */
.icon-glass:before                { content: "\f000"; }
.icon-music:before                { content: "\f001"; }
.icon-search:before               { content: "\f002"; }
.icon-envelope:before             { content: "\f003"; }
.icon-heart:before                { content: "\f004"; }
.icon-star:before                 { content: "\f005"; }
.icon-star-empty:before           { content: "\f006"; }
.icon-user:before                 { content: "\f007"; }
.icon-film:before                 { content: "\f008"; }
.icon-th-large:before             { content: "\f009"; }
.icon-th:before                   { content: "\f00a"; }
.icon-th-list:before              { content: "\f00b"; }
.icon-ok:before                   { content: "\f00c"; }
.icon-remove:before               { content: "\f00d"; }
.icon-zoom-in:before              { content: "\f00e"; }
.icon-zoom-out:before             { content: "\f010"; }
.icon-off:before                  { content: "\f011"; }
.icon-signal:before               { content: "\f012"; }
.icon-cog:before                  { content: "\f013"; }
.icon-trash:before                { content: "\f014"; }
.icon-home:before                 { content: "\f015"; }
.icon-file:before                 { content: "\f016"; }
.icon-time:before                 { content: "\f017"; }
.icon-road:before                 { content: "\f018"; }
.icon-download-alt:before         { content: "\f019"; }
.icon-download:before             { content: "\f01a"; }
.icon-upload:before               { content: "\f01b"; }
.icon-inbox:before                { content: "\f01c"; }
.icon-play-circle:before          { content: "\f01d"; }
.icon-repeat:before               { content: "\f01e"; }
/* \f020 doesn't work in Safari. all shifted one down */
.icon-refresh:before              { content: "\f021"; }
.icon-list-alt:before             { content: "\f022"; }
.icon-lock:before                 { content: "\f023"; }
.icon-flag:before                 { content: "\f024"; }
.icon-headphones:before           { content: "\f025"; }
.icon-volume-off:before           { content: "\f026"; }
.icon-volume-down:before          { content: "\f027"; }
.icon-volume-up:before            { content: "\f028"; }
.icon-qrcode:before               { content: "\f029"; }
.icon-barcode:before              { content: "\f02a"; }
.icon-tag:before                  { content: "\f02b"; }
.icon-tags:before                 { content: "\f02c"; }
.icon-book:before                 { content: "\f02d"; }
.icon-bookmark:before             { content: "\f02e"; }
.icon-print:before                { content: "\f02f"; }
.icon-camera:before               { content: "\f030"; }
.icon-font:before                 { content: "\f031"; }
.icon-bold:before                 { content: "\f032"; }
.icon-italic:before               { content: "\f033"; }
.icon-text-height:before          { content: "\f034"; }
.icon-text-width:before           { content: "\f035"; }
.icon-align-left:before           { content: "\f036"; }
.icon-align-center:before         { content: "\f037"; }
.icon-align-right:before          { content: "\f038"; }
.icon-align-justify:before        { content: "\f039"; }
.icon-list:before                 { content: "\f03a"; }
.icon-indent-left:before          { content: "\f03b"; }
.icon-indent-right:before         { content: "\f03c"; }
.icon-facetime-video:before       { content: "\f03d"; }
.icon-picture:before              { content: "\f03e"; }
.icon-pencil:before               { content: "\f040"; }
.icon-map-marker:before           { content: "\f041"; }
.icon-adjust:before               { content: "\f042"; }
.icon-tint:before                 { content: "\f043"; }
.icon-edit:before                 { content: "\f044"; }
.icon-share:before                { content: "\f045"; }
.icon-check:before                { content: "\f046"; }
.icon-move:before                 { content: "\f047"; }
.icon-step-backward:before        { content: "\f048"; }
.icon-fast-backward:before        { content: "\f049"; }
.icon-backward:before             { content: "\f04a"; }
.icon-play:before                 { content: "\f04b"; }
.icon-pause:before                { content: "\f04c"; }
.icon-stop:before                 { content: "\f04d"; }
.icon-forward:before              { content: "\f04e"; }
.icon-fast-forward:before         { content: "\f050"; }
.icon-step-forward:before         { content: "\f051"; }
.icon-eject:before                { content: "\f052"; }
.icon-chevron-left:before         { content: "\f053"; }
.icon-chevron-right:before        { content: "\f054"; }
.icon-plus-sign:before            { content: "\f055"; }
.icon-minus-sign:before           { content: "\f056"; }
.icon-remove-sign:before          { content: "\f057"; }
.icon-ok-sign:before              { content: "\f058"; }
.icon-question-sign:before        { content: "\f059"; }
.icon-info-sign:before            { content: "\f05a"; }
.icon-screenshot:before           { content: "\f05b"; }
.icon-remove-circle:before        { content: "\f05c"; }
.icon-ok-circle:before            { content: "\f05d"; }
.icon-ban-circle:before           { content: "\f05e"; }
.icon-arrow-left:before           { content: "\f060"; }
.icon-arrow-right:before          { content: "\f061"; }
.icon-arrow-up:before             { content: "\f062"; }
.icon-arrow-down:before           { content: "\f063"; }
.icon-share-alt:before            { content: "\f064"; }
.icon-resize-full:before          { content: "\f065"; }
.icon-resize-small:before         { content: "\f066"; }
.icon-plus:before                 { content: "\f067"; }
.icon-minus:before                { content: "\f068"; }
.icon-asterisk:before             { content: "\f069"; }
.icon-exclamation-sign:before     { content: "\f06a"; }
.icon-gift:before                 { content: "\f06b"; }
.icon-leaf:before                 { content: "\f06c"; }
.icon-fire:before                 { content: "\f06d"; }
.icon-eye-open:before             { content: "\f06e"; }
.icon-eye-close:before            { content: "\f070"; }
.icon-warning-sign:before         { content: "\f071"; }
.icon-plane:before                { content: "\f072"; }
.icon-calendar:before             { content: "\f073"; }
.icon-random:before               { content: "\f074"; }
.icon-comment:before              { content: "\f075"; }
.icon-magnet:before               { content: "\f076"; }
.icon-chevron-up:before           { content: "\f077"; }
.icon-chevron-down:before         { content: "\f078"; }
.icon-retweet:before              { content: "\f079"; }
.icon-shopping-cart:before        { content: "\f07a"; }
.icon-folder-close:before         { content: "\f07b"; }
.icon-folder-open:before          { content: "\f07c"; }
.icon-resize-vertical:before      { content: "\f07d"; }
.icon-resize-horizontal:before    { content: "\f07e"; }
.icon-bar-chart:before            { content: "\f080"; }
.icon-twitter-sign:before         { content: "\f081"; }
.icon-facebook-sign:before        { content: "\f082"; }
.icon-camera-retro:before         { content: "\f083"; }
.icon-key:before                  { content: "\f084"; }
.icon-cogs:before                 { content: "\f085"; }
.icon-comments:before             { content: "\f086"; }
.icon-thumbs-up:before            { content: "\f087"; }
.icon-thumbs-down:before          { content: "\f088"; }
.icon-star-half:before            { content: "\f089"; }
.icon-heart-empty:before          { content: "\f08a"; }
.icon-signout:before              { content: "\f08b"; }
.icon-linkedin-sign:before        { content: "\f08c"; }
.icon-pushpin:before              { content: "\f08d"; }
.icon-external-link:before        { content: "\f08e"; }
.icon-signin:before               { content: "\f090"; }
.icon-trophy:before               { content: "\f091"; }
.icon-github-sign:before          { content: "\f092"; }
.icon-upload-alt:before           { content: "\f093"; }
.icon-lemon:before                { content: "\f094"; }
.icon-phone:before                { content: "\f095"; }
.icon-check-empty:before          { content: "\f096"; }
.icon-bookmark-empty:before       { content: "\f097"; }
.icon-phone-sign:before           { content: "\f098"; }
.icon-twitter:before              { content: "\f099"; }
.icon-facebook:before             { content: "\f09a"; }
.icon-github:before               { content: "\f09b"; }
.icon-unlock:before               { content: "\f09c"; }
.icon-credit-card:before          { content: "\f09d"; }
.icon-rss:before                  { content: "\f09e"; }
.icon-hdd:before                  { content: "\f0a0"; }
.icon-bullhorn:before             { content: "\f0a1"; }
.icon-bell:before                 { content: "\f0a2"; }
.icon-certificate:before          { content: "\f0a3"; }
.icon-hand-right:before           { content: "\f0a4"; }
.icon-hand-left:before            { content: "\f0a5"; }
.icon-hand-up:before              { content: "\f0a6"; }
.icon-hand-down:before            { content: "\f0a7"; }
.icon-circle-arrow-left:before    { content: "\f0a8"; }
.icon-circle-arrow-right:before   { content: "\f0a9"; }
.icon-circle-arrow-up:before      { content: "\f0aa"; }
.icon-circle-arrow-down:before    { content: "\f0ab"; }
.icon-globe:before                { content: "\f0ac"; }
.icon-wrench:before               { content: "\f0ad"; }
.icon-tasks:before                { content: "\f0ae"; }
.icon-filter:before               { content: "\f0b0"; }
.icon-briefcase:before            { content: "\f0b1"; }
.icon-fullscreen:before           { content: "\f0b2"; }
.icon-group:before                { content: "\f0c0"; }
.icon-link:before                 { content: "\f0c1"; }
.icon-cloud:before                { content: "\f0c2"; }
.icon-beaker:before               { content: "\f0c3"; }
.icon-cut:before                  { content: "\f0c4"; }
.icon-copy:before                 { content: "\f0c5"; }
.icon-paper-clip:before           { content: "\f0c6"; }
.icon-save:before                 { content: "\f0c7"; }
.icon-sign-blank:before           { content: "\f0c8"; }
.icon-reorder:before              { content: "\f0c9"; }
.icon-list-ul:before              { content: "\f0ca"; }
.icon-list-ol:before              { content: "\f0cb"; }
.icon-strikethrough:before        { content: "\f0cc"; }
.icon-underline:before            { content: "\f0cd"; }
.icon-table:before                { content: "\f0ce"; }
.icon-magic:before                { content: "\f0d0"; }
.icon-truck:before                { content: "\f0d1"; }
.icon-pinterest:before            { content: "\f0d2"; }
.icon-pinterest-sign:before       { content: "\f0d3"; }
.icon-google-plus-sign:before     { content: "\f0d4"; }
.icon-google-plus:before          { content: "\f0d5"; }
.icon-money:before                { content: "\f0d6"; }
.icon-caret-down:before           { content: "\f0d7"; }
.icon-caret-up:before             { content: "\f0d8"; }
.icon-caret-left:before           { content: "\f0d9"; }
.icon-caret-right:before          { content: "\f0da"; }
.icon-columns:before              { content: "\f0db"; }
.icon-sort:before                 { content: "\f0dc"; }
.icon-sort-down:before            { content: "\f0dd"; }
.icon-sort-up:before              { content: "\f0de"; }
.icon-envelope-alt:before         { content: "\f0e0"; }
.icon-linkedin:before             { content: "\f0e1"; }
.icon-undo:before                 { content: "\f0e2"; }
.icon-legal:before                { content: "\f0e3"; }
.icon-dashboard:before            { content: "\f0e4"; }
.icon-comment-alt:before          { content: "\f0e5"; }
.icon-comments-alt:before         { content: "\f0e6"; }
.icon-bolt:before                 { content: "\f0e7"; }
.icon-sitemap:before              { content: "\f0e8"; }
.icon-umbrella:before             { content: "\f0e9"; }
.icon-paste:before                { content: "\f0ea"; }
.icon-user-md:before              { content: "\f200"; }
@import url('demo.css');
@import url('font-awesome.css');
/* GLOBALS */
*,
*:after,
*:before {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    padding: 0;
    margin: 0;
}
::selection {
    background: transparent;
}
::-moz-selection {
    background: transparent;
}
.wrapper-demo {
    margin: 60px 0 0 0;
    *zoom: 1;
    font-weight: 400;
}
.wrapper-demo:after {
    clear: both;
    content: "";
    display: table;
}
/* DEMO 1 */
.wrapper-dropdown-1 {
    /* Size and position */
    position: relative; /* Enable absolute positionning for children and pseudo elements */
    width: 200px;
    padding: 10px;
    margin: 0 auto;
    /* Styles */
    background: #9bc7de;
    color: #fff;
    outline: none;
    cursor: pointer;
    /* Font settings */
    font-weight: bold;
}
.wrapper-dropdown-1:after {
    content: "";
    width: 0;
    height: 0;
    position: absolute;
    right: 16px;
    top: 50%;
    margin-top: -6px;
    border-width: 6px 0 6px 6px;
    border-style: solid;
    border-color: transparent #fff;  
}
.wrapper-dropdown-1 .dropdown {
    /* Size & position */
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    /* Styles */
    background: #fff;
    list-style: none;
    font-weight: normal; /* Cancels previous font-weight: bold; */
    /* Hiding */
    opacity: 0;
    pointer-events: none;
}
.wrapper-dropdown-1 .dropdown li a {
    display: block;
    text-decoration: none;
    color: #9e9e9e;
    padding: 10px 20px;
}
/* Hover state */
.wrapper-dropdown-1 .dropdown li:hover a {
    background: #f3f8f8;
}
/* Active state */
.wrapper-dropdown-1.active .dropdown {
    opacity: 1;
    pointer-events: auto;
}
.wrapper-dropdown-1.active:after {
    border-color: #9bc7de transparent;
    border-width: 6px 6px 0 6px ;
    margin-top: -3px;
}
.wrapper-dropdown-1.active {
  background: #9bc7de;
  background: -moz-linear-gradient(left,  #9bc7de 0%, #9bc7de 78%, #ffffff 78%, #ffffff 100%);
  background: -webkit-gradient(linear, left top, right top, color-stop(0%,#9bc7de), color-stop(78%,#9bc7de), color-stop(78%,#ffffff), color-stop(100%,#ffffff));
  background: -webkit-linear-gradient(left,  #9bc7de 0%,#9bc7de 78%,#ffffff 78%,#ffffff 100%);
  background: -o-linear-gradient(left,  #9bc7de 0%,#9bc7de 78%,#ffffff 78%,#ffffff 100%);
  background: -ms-linear-gradient(left,  #9bc7de 0%,#9bc7de 78%,#ffffff 78%,#ffffff 100%);
  background: linear-gradient(to right,  #9bc7de 0%,#9bc7de 78%,#ffffff 78%,#ffffff 100%);
  filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#9bc7de', endColorstr='#ffffff',GradientType=1 );
}
/* No CSS3 support */
.no-opacity       .wrapper-dropdown-1 .dropdown,
.no-pointerevents .wrapper-dropdown-1 .dropdown {
    display: none;
    opacity: 1; /* If opacity support but no pointer-events support */
    pointer-events: auto; /* If pointer-events support but no pointer-events support */
}
.no-opacity       .wrapper-dropdown-1.active .dropdown,
.no-pointerevents .wrapper-dropdown-1.active .dropdown {
    display: block;
}
/* DEMO 2 */
.wrapper-dropdown-2 {
    /* Size and position */
    position: relative; /* Enable absolute positionning for children and pseudo elements */
    width: 200px;
    margin: 0 auto;
    padding: 10px 15px;
    /* Styles */
    background: #fff;
    border-left: 5px solid grey;
    cursor: pointer;
    outline: none;
}
.wrapper-dropdown-2:after {
    content: "";
    width: 0;
    height: 0;
    position: absolute;
    right: 16px;
    top: 50%;
    margin-top: -3px;
    border-width: 6px 6px 0 6px;
    border-style: solid;
    border-color: grey transparent;
}
.wrapper-dropdown-2 .dropdown {
  /* Size & position */
    position: absolute;
    top: 100%;
    left: -5px;
    right: 0px;
    /* Styles */
    background: white;
    -webkit-transition: all 0.3s ease-out;
    -moz-transition: all 0.3s ease-out;
    -ms-transition: all 0.3s ease-out;
    -o-transition: all 0.3s ease-out;
    transition: all 0.3s ease-out;
    list-style: none;
    /* Hiding */
    opacity: 0;
    pointer-events: none;
}
.wrapper-dropdown-2 .dropdown li a {
    display: block;
    text-decoration: none;
    color: #333;
    border-left: 5px solid;
    padding: 10px;
    -webkit-transition: all 0.3s ease-out;
    -moz-transition: all 0.3s ease-out;
    -ms-transition: all 0.3s ease-out;
    -o-transition: all 0.3s ease-out;
    transition: all 0.3s ease-out;
}
.wrapper-dropdown-2 .dropdown li:nth-child(1) a {
    border-left-color: #00ACED;
}
.wrapper-dropdown-2 .dropdown li:nth-child(2) a {
    border-left-color: #4183C4;
}
.wrapper-dropdown-2 .dropdown li:nth-child(3) a {
    border-left-color: #3B5998;
}
.wrapper-dropdown-2 .dropdown li i {
    margin-right: 5px;
    color: inherit;
    vertical-align: middle;
}
/* Hover state */
.wrapper-dropdown-2 .dropdown li:hover a {
    color: grey;
}
/* Active state */
.wrapper-dropdown-2.active:after {
    border-width: 0 6px 6px 6px;
}
.wrapper-dropdown-2.active .dropdown {
    opacity: 1;
    pointer-events: auto;
}
/* No CSS3 support */
.no-opacity       .wrapper-dropdown-2 .dropdown,
.no-pointerevents .wrapper-dropdown-2 .dropdown {
    display: none;
    opacity: 1; /* If opacity support but no pointer-events support */
    pointer-events: auto; /* If pointer-events support but no pointer-events support */
}
.no-opacity       .wrapper-dropdown-2.active .dropdown,
.no-pointerevents .wrapper-dropdown-2.active .dropdown {
    display: block;
}
/* DEMO 3 */
.wrapper-dropdown-3 {
    /* Size and position */
    position: relative;
    width: 200px;
    margin: 0 auto;
    padding: 10px;
    /* Styles */
    background: #fff;
    border-radius: 7px;
    border: 1px solid rgba(0,0,0,0.15);
    box-shadow: 0 1px 1px rgba(50,50,50,0.1);
    cursor: pointer;
    outline: none;
    /* Font settings */
    font-weight: bold;
    color: #8AA8BD;
}
.wrapper-dropdown-3:after {
    content: "";
    width: 0;
    height: 0;
    position: absolute;
    right: 15px;
    top: 50%;
    margin-top: -3px;
    border-width: 6px 6px 0 6px;
    border-style: solid;
    border-color: #8aa8bd transparent;
}
.wrapper-dropdown-3 .dropdown {
  /* Size & position */
    position: absolute;
    top: 140%;
    left: 0;
    right: 0;
    /* Styles */
    background: white;
    border-radius: inherit;
    border: 1px solid rgba(0,0,0,0.17);
    box-shadow: 0 0 5px rgba(0,0,0,0.1);
    font-weight: normal;
    -webkit-transition: all 0.5s ease-in;
    -moz-transition: all 0.5s ease-in;
    -ms-transition: all 0.5s ease-in;
    -o-transition: all 0.5s ease-in;
    transition: all 0.5s ease-in;
    list-style: none;
    /* Hiding */
    opacity: 0;
    pointer-events: none;
}
.wrapper-dropdown-3 .dropdown:after {
    content: "";
    width: 0;
    height: 0;
    position: absolute;
    bottom: 100%;
    right: 15px;
    border-width: 0 6px 6px 6px;
    border-style: solid;
    border-color: #fff transparent;  
}
.wrapper-dropdown-3 .dropdown:before {
    content: "";
    width: 0;
    height: 0;
    position: absolute;
    bottom: 100%;
    right: 13px;
    border-width: 0 8px 8px 8px;
    border-style: solid;
    border-color: rgba(0,0,0,0.1) transparent;  
}
.wrapper-dropdown-3 .dropdown li a {
    display: block;
    padding: 10px;
    text-decoration: none;
    color: #8aa8bd;
    border-bottom: 1px solid #e6e8ea;
    box-shadow: inset 0 1px 0 rgba(255,255,255,1);
    -webkit-transition: all 0.3s ease-out;
    -moz-transition: all 0.3s ease-out;
    -ms-transition: all 0.3s ease-out;
    -o-transition: all 0.3s ease-out;
    transition: all 0.3s ease-out;
}
.wrapper-dropdown-3 .dropdown li i {
    float: right;
    color: inherit;
}
.wrapper-dropdown-3 .dropdown li:first-of-type a {
    border-radius: 7px 7px 0 0;
}
.wrapper-dropdown-3 .dropdown li:last-of-type a {
    border: none;
    border-radius: 0 0 7px 7px;
}
/* Hover state */
.wrapper-dropdown-3 .dropdown li:hover a {
    background: #f3f8f8;
}
/* Active state */
.wrapper-dropdown-3.active .dropdown {
    opacity: 1;
    pointer-events: auto;
}
/* No CSS3 support */
.no-opacity       .wrapper-dropdown-3 .dropdown,
.no-pointerevents .wrapper-dropdown-3 .dropdown {
    display: none;
    opacity: 1; /* If opacity support but no pointer-events support */
    pointer-events: auto; /* If pointer-events support but no pointer-events support */
}
.no-opacity       .wrapper-dropdown-3.active .dropdown,
.no-pointerevents .wrapper-dropdown-3.active .dropdown {
    display: block;
}

/* DEMO 4 */
.wrapper-dropdown-4 {
    /* Size and position */
    position: relative;
    width: 270px;
    margin: 0 auto;
    padding: 10px 10px 10px 30px;
    /* Styles */
    background: #fff;
    border: 1px solid silver;
    cursor: pointer;
    outline: none;
}
.wrapper-dropdown-4:after {
    content: "";
    width: 0;
    height: 0;
    position: absolute;
    right: 10px;
    top: 50%;
    margin-top: -3px;
    border-width: 6px 6px 0 6px;
    border-style: solid;
    border-color: #ffaa9f transparent;
}
.wrapper-dropdown-4 .dropdown {
    /* Size & position */
    position: absolute;
    top: 100%;
    margin-top: 1px;
    left: -1px;
    right: -1px;
    /* Styles */
    background: white;
    border: inherit;
    border-top: none;
    list-style: none;
    -webkit-transition: all 0.3s ease-out;
    -moz-transition: all 0.3s ease-out;
    -ms-transition: all 0.3s ease-out;
    -o-transition: all 0.3s ease-out;
    transition: all 0.3s ease-out;

    /* Hiding */
    opacity: 0;
    pointer-events: none;
}
/* Red lines: the pseudo-elements way */
.wrapper-dropdown-4 .dropdown:before,
.wrapper-dropdown-4:before {
    content: "";
    width: 4px;
    height: 100%;
    position: absolute;
    top: 0;
    left: 15px;
    border: 1px solid #ffaa9f;
    border-top: none;
    border-bottom: none;
    z-index: 2;
}
/* Red lines: the gradients way */
/*
.wrapper-dropdown-4 .dropdown,
.wrapper-dropdown-4 {
  background: linear-gradient(left, white 5%, #ffaa9f 5%, #ffaa9f 5.3%, white 5.3%, white 6.5%, #ffaa9f 6.5%, #ffaa9f 6.8%, white 6.8%);
}
.wrapper-dropdown-4 .dropdown li:hover label {
  background: linear-gradient(left, #f0F0F0 5%, #ffaa9f 5%, #ffaa9f 5.3%, #f0F0F0 5.3%, #f0F0F0 6.5%, #ffaa9f 6.5%, #ffaa9f 6.8%, #f0F0F0 6.8%);
}
*/
.wrapper-dropdown-4 .dropdown li {
    position: relative; /* Enable absolute positioning for checkboxes */
}
.wrapper-dropdown-4 .dropdown li label {
    display: block;
    padding: 10px 10px 10px 30px; /* Same padding as the button */
    border-bottom: 1px dotted #1ccfcf;
    -webkit-transition: all 0.3s ease-out;
    -moz-transition: all 0.3s ease-out;
    -ms-transition: all 0.3s ease-out;
    -o-transition: all 0.3s ease-out;
    transition: all 0.3s ease-out;
}
.wrapper-dropdown-4 .dropdown li:last-of-type label {
    border: none;
}
.wrapper-dropdown-4 .dropdown li input /* Checkboxes */ {
    position: absolute;
    display: block;
    right: 10px;
    top: 50%;
    margin-top: -8px;
}
/* Hover state */
.wrapper-dropdown-4 .dropdown li:hover label {
    background: #f0f0f0;
}
/* Checked state */
.wrapper-dropdown-4 .dropdown li input:checked ~ label {
    color: grey;
    text-decoration: line-through;
}
/* Active state */
.wrapper-dropdown-4.active:after {
    border-width: 0 6px 6px 6px;
}
.wrapper-dropdown-4.active .dropdown {
    opacity: 1;
    pointer-events: auto;
}
/* No CSS3 support */
.no-opacity       wrapper-dropdown-4 .dropdown,
.no-pointerevents .wrapper-dropdown-4 .dropdown {
    display: none;
    opacity: 1; /* If opacity support but no pointer-events support */
    pointer-events: auto; /* If pointer-events support but no pointer-events support */
}
.no-opacity       .wrapper-dropdown-4.active .dropdown,
.no-pointerevents .wrapper-dropdown-4.active .dropdown {
    display: block;
}
/* DEMO 5 */
.wrapper-dropdown-5 {
    /* Size & position */
    position: relative;
    width: 200px;
    margin: 0 auto;
    padding: 12px 15px;
    /* Styles */
    background: #fff;
    border-radius: 5px;
    box-shadow: 0 1px 0 rgba(0,0,0,0.2);
    cursor: pointer;
    outline: none;
    -webkit-transition: all 0.3s ease-out;
    -moz-transition: all 0.3s ease-out;
    -ms-transition: all 0.3s ease-out;
    -o-transition: all 0.3s ease-out;
    transition: all 0.3s ease-out;
}
.wrapper-dropdown-5:after { /* Little arrow */
    content: "";
    width: 0;
    height: 0;
    position: absolute;
    top: 50%;
    right: 15px;
    margin-top: -3px;
    border-width: 6px 6px 0 6px;
    border-style: solid;
    border-color: #4cbeff transparent;
}
.wrapper-dropdown-5 .dropdown {
    /* Size & position */
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    /* Styles */
    background: #fff;
    border-radius: 0 0 5px 5px;
    border: 1px solid rgba(0,0,0,0.2);
    border-top: none;
    border-bottom: none;
    list-style: none;
    -webkit-transition: all 0.3s ease-out;
    -moz-transition: all 0.3s ease-out;
    -ms-transition: all 0.3s ease-out;
    -o-transition: all 0.3s ease-out;
    transition: all 0.3s ease-out;
    /* Hiding */
    max-height: 0;
    overflow: hidden;
}
.wrapper-dropdown-5 .dropdown li {
    padding: 0 10px ;
}
.wrapper-dropdown-5 .dropdown li a {
    display: block;
    text-decoration: none;
    color: #333;
    padding: 10px 0;
    transition: all 0.3s ease-out;
    border-bottom: 1px solid #e6e8ea;
}
.wrapper-dropdown-5 .dropdown li:last-of-type a {
    border: none;
}
.wrapper-dropdown-5 .dropdown li i {
    margin-right: 5px;
    color: inherit;
    vertical-align: middle;
}
/* Hover state */
.wrapper-dropdown-5 .dropdown li:hover a {
    color: #57a9d9;
}
/* Active state */
.wrapper-dropdown-5.active {
    border-radius: 5px 5px 0 0;
    background: #4cbeff;
    box-shadow: none;
    border-bottom: none;
    color: white;
}
.wrapper-dropdown-5.active:after {
    border-color: #82d1ff transparent;
}
.wrapper-dropdown-5.active .dropdown {
    border-bottom: 1px solid rgba(0,0,0,0.2);
    max-height: 400px;
}
/* No CSS3 support: none */



2. Thêm JS

Thêm đoạn JS sau trước </head>


<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script><script src="https://myjectpro.googlecode.com/files/modernizr.custom.79639.js"></script>

<script type="text/javascript">
function DropDown(el) {
this.dd = el;
this.placeholder = this.dd.children('span');
this.opts = this.dd.find('ul.dropdown > li');
this.val = '';
this.index = -1;
this.initEvents();
}
DropDown.prototype = {
initEvents : function() {
var obj = this;
obj.dd.on('click', function(event){
$(this).toggleClass('active');
return false;
});
obj.opts.on('click',function(){
var opt = $(this);
obj.val = opt.text();
obj.index = opt.index();
obj.placeholder.text('Gender: ' + obj.val);
});
},
getValue : function() {
return this.val;
},
getIndex : function() {
return this.index;
}
}
$(function() {
var dd = new DropDown( $('#dd') );
$(document).click(function() {
// all dropdowns
$('.wrapper-dropdown-1').removeClass('active');
});
});
</script>


3. Chọn một loại menu bạn muốn và đặt bất cứ chỗ nào bạn thích

Demo 1: 



<div class="main">
<div class="wrapper-demo">
<div id="dd" class="wrapper-dropdown-1" tabindex="1">
<span>Gender</span>
   <ul class="dropdown" tabindex="1">
       <li><a href="#">Male</a></li>
       <li><a href="#">Female</a></li>
   </ul>
</div>
​</div>
</div>



(Vui lòng ghi lại nguồn http://www.erhay.com khi phát hành lại thông tin từ trang này)