Tạo button theo phong cách trang Facebook với CSS3

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.uibutton,

.uibutton:visited {

    position: relative;

    z-index: 1;

    overflow: visible;

    display: inline-block;

    padding: 0.3em 0.6em 0.375em;

    border: 1px solid #999;

    border-bottom-color: #888;

    margin: 0;

    text-decoration: none;

    text-align: center;

    font: bold 11px/normal 'lucida grande', tahoma, verdana, arial, sans-serif;

    white-space: nowrap;

    cursor: pointer;

    /* outline: none; */

    color: #333;

    background-color: #eee;

    background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#f5f6f6), to(#e4e4e3));

    background-image: -moz-linear-gradient(#f5f6f6, #e4e4e3);

    background-image: -o-linear-gradient(#f5f6f6, #e4e4e3);

    background-image: linear-gradient(#f5f6f6, #e4e4e3);

    filter: progid:DXImageTransform.Microsoft.gradient(startColorStr='#f5f6f6', EndColorStr='#e4e4e3'); /* for IE 6 - 9 */

    -webkit-box-shadow: 0 1px 0 rgba(0, 0, 0, 0.1), inset 0 1px 0 #fff;

    -moz-box-shadow: 0 1px 0 rgba(0, 0, 0, 0.1), inset 0 1px 0 #fff;

    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.1), inset 0 1px 0 #fff;

    /* IE hacks */

    zoom: 1;

    *display: inline;

}

.uibutton:hover,

.uibutton:focus,

.uibutton:active {

    border-color: #777 #777 #666;

}

.uibutton:active {

    border-color: #aaa;

    background: #ddd;

    filter: none;

    -webkit-box-shadow: none;

    -moz-box-shadow: none;

    box-shadow: none;

}

/* overrides extra padding on button elements in Firefox */

.uibutton::-moz-focus-inner {

    padding: 0;

    border: 0;

}

/* ............................................................................................................. Icons */

.uibutton.icon:before {

    content: "";

    position: relative;

    top: 1px;

    float:left;

    width: 10px;

    height: 12px;

    margin: 0 0.5em 0 0;

    background: url(fb-icons.png) 99px 99px no-repeat;

}

.uibutton.edit:before  { background-position: 0 0; }

.uibutton.add:before  { background-position: -10px 0; }

.uibutton.secure:before  { background-position: -20px 0; }

.uibutton.prev:before  { background-position: -30px 0; }

.uibutton.next:before  { float:right; margin: 0 -0.25em 0 0.5em; background-position: -40px 0; }

/* ------------------------------------------------------------------------------------------------------------- BUTTON EXTENSIONS */

/* ............................................................................................................. Large */

.uibutton.large {

    font-size: 13px;

}

/* ............................................................................................................. Submit, etc */

.uibutton.confirm {

    border-color: #29447e #29447e #1a356e;

    color: #fff;

    background-color: #5B74A8;

    background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#637bad), to(#5872a7));

    background-image: -moz-linear-gradient(#637bad, #5872a7);

    background-image: -o-linear-gradient(#637bad, #5872a7);

    background-image: linear-gradient(#637bad, #5872a7);

    filter: progid:DXImageTransform.Microsoft.gradient(startColorStr='#637bad', EndColorStr='#5872a7'); /* for IE 6 - 9 */

    -webkit-box-shadow: 0 1px 0 rgba(0, 0, 0, 0.1), inset 0 1px 0 #8a9cc2;

    -moz-box-shadow: 0 1px 0 rgba(0, 0, 0, 0.1), inset 0 1px 0 #8a9cc2;

    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.1), inset 0 1px 0 #8a9cc2;

}

.uibutton.confirm:active {

    border-color: #29447E;

    background: #4F6AA3;

    filter: none;

    -webkit-box-shadow: none;

    -moz-box-shadow: none;

    box-shadow: none;

}

/* ............................................................................................................. Special */

.uibutton.special {

    border-color: #3b6e22 #3b6e22 #2c5115;

    color: #fff;

    background-color: #69a74e;

    background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#75ae5c), to(#67a54b));

    background-image: -moz-linear-gradient(#75ae5c, #67a54b);

    background-image: -o-linear-gradient(#75ae5c, #67a54b);

    background-image: linear-gradient(#75ae5c, #67a54b);

    filter: progid:DXImageTransform.Microsoft.gradient(startColorStr='#75ae5c', EndColorStr='#67a54b'); /* for IE 6 - 9 */

    -webkit-box-shadow: 0 1px 0 rgba(0, 0, 0, 0.1), inset 0 1px 0 #98c286;

    -moz-box-shadow: 0 1px 0 rgba(0, 0, 0, 0.1), inset 0 1px 0 #98c286;

    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.1), inset 0 1px 0 #98c286;

}

.uibutton.special:active {

    border-color: #3b6e22;

    background: #609946;

    filter: none;

    -webkit-box-shadow: none;

    -moz-box-shadow: none;

    box-shadow: none;

}

/* ............................................................................................................. Disable */

.uibutton.disable {

    z-index: 0;

    border-color: #c8c8c8;

    color: #b8b8b8;

    background: #f2f2f2;

    cursor: default;

    -webkit-box-shadow: none;

    -moz-box-shadow: none;

    box-shadow: none;

}

.uibutton.confirm.disable {

    color: #fff;

    border-color: #94a2bf;

    background: #adbad4;

}

.uibutton.special.disable {

    color: #fff;

    border-color: #9db791;

    background: #b4d3a7;

}

.uibutton.disable.icon:before,

.uibutton.disable.icon:after {

    opacity: 0.5;

}

/* ------------------------------------------------------------------------------------------------------------- BUTTON GROUPS */

.uibutton-group {

    display: inline-block;

    list-style: none;

    padding: 0;

    margin: 0;

    /* IE hacks */

    zoom: 1;

    *display: inline;

}

.uibutton + .uibutton,

.uibutton + .uibutton-group,

.uibutton-group + .uibutton,

.uibutton-group + .uibutton-group {

    margin-left: 3px;

}

.uibutton-group li {

    float: left;

    padding: 0;

    margin: 0;

}

.uibutton-group .uibutton {

    float: left;

    margin-left: -1px;

}

.uibutton-group .uibutton:hover,

.uibutton-group .uibutton:focus,

.uibutton-group .uibutton:active {

    z-index:2;

}

.uibutton-group > .uibutton:first-child,

.uibutton-group li:first-child .uibutton {

    margin-left: 0;

}

/* ------------------------------------------------------------------------------------------------------------- BUTTON CONTAINER */

/* For mixing buttons and button groups, e.g., in a navigation bar */

.uibutton-toolbar {

    padding: 6px;

    border-top: 1px solid #ccc;

    background: #f2f2f2;

}

.uibutton-toolbar .uibutton,

.uibutton-toolbar .uibutton-group {

    vertical-align: bottom;

}

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<p><a class="uibutton" href="#button">Change picture</a></p>

<p><input class="uibutton confirm" type="submit" value="Publish"></p>

<p><button class="uibutton special">Request an invitation</button></p>

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<p><a class="uibutton large" href="#button">Change picture</a></p>

<p><input class="uibutton large confirm" type="submit" value="Publish"></p>

<p><button class="uibutton large special">Request an invitation</button></p>

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<div class="uibutton-toolbar">

            <a class="uibutton" href="#button">Mark as unread</a>

            <div class="uibutton-group">

                <a class="uibutton" href="#button">Report spam</a>

                <a class="uibutton" href="#button">Delete</a>

            </div>

            <a class="uibutton" href="#button">Unsubscribe</a>

 </div>

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<table>

            <thead>

                <tr>

                    <th scope="col">Class</th>

                    <th scope="col">Example</th>

                </tr>

            </thead>

            <tr>

                <td scope="row"><code>.edit</code></td>

                <td><a class="uibutton icon edit" href="#button">Edit post</a></td>

            </tr>

            <tr>

                <td scope="row"><code>.add</code></td>

                <td><a class="uibutton icon add" href="#button">Add a photo</a></td>

            </tr>

            <tr>

                <td scope="row"><code>.secure</code></td>

                <td><a class="uibutton icon secure" href="#button">Private account</a></td>

            </tr>

            <tr>

                <td scope="row"><code>.prev</code></td>

                <td><a class="uibutton icon prev" href="#button">Back to messages</a></td>

            </tr>

            <tr>

                <td scope="row"><code>.next</code></td>

                <td><a class="uibutton icon next" href="#button">Get more info</a></td>

            </tr>

</table>