HTML5, CSS3 & JS Experiments

<!-- css3 hello bar -->
<div class="acidjs-hellobar acidjs-hellobar-639">
    <input type="checkbox" id="acidjs-hellobar-switcher" checked="checked" />
    <label for="acidjs-hellobar-switcher">
        <span>⇧</span>
        <span>⇩</span>
    </label>
    <div>
        <div>Notification toolbar, written entirely in CSS3 and without 
            a single line of JavaScript. Click the arrow on the right 
            to expand/collapse. Ain't it cool?</div>
    </div>
</div>
<!-- / css3 hello bar -->

<!--        <p class="options-block">Looking for enterprise HTML5, CSS3 and JavaScript web controls? 
    Check <a href="http://wemakesites.net/" target="_blank">AcidJs.WebUI</a>.</p>-->

        

/*
 * CSS3 Hello Bar
 * @version 1.0
 * @author Martin Ivanov
 * @url developer website: http://wemakesites.net/
 * @url developer twitter: https://twitter.com/#!/wemakesitesnet
 * @url developer blog http://acidmartin.wordpress.com/
 **/

:root .acidjs-hellobar,
.acidjs-hellobar label,
.acidjs-hellobar label span
{
    display: block;
}

.acidjs-hellobar,
.acidjs-hellobar *
{
    margin: 0;
    padding: 0;
}

.acidjs-hellobar > div,
.acidjs-hellobar label span
{
    line-height: 30px;
    text-align: center;
    color: #fff;
    background: #666;
    transition: margin 300ms ease-in-out;
    box-shadow: 0 0 2px 2px rgba(58, 58, 58, .50);
}

.acidjs-hellobar,
.acidjs-hellobar input
{
    display: none;
}

.acidjs-hellobar
{
    position: fixed;
    z-index: 250;
    top: 0;
    left: 0;
    width: 100%;
    font-family: Arial, Helvetica, Verdana, Sans-serif;
    color: #000;
    cursor: default;
    
    /* these properties are required only by the demo page at http://experiments.wemakesites.net/css3-hello-bar.html */
    -webkit-pointer-events: none;
    -moz-pointer-events: none;
    pointer-events: none;
}

/* these rules are required only by the demo page at http://experiments.wemakesites.net/css3-hello-bar.html */
.acidjs-hellobar > div,
.acidjs-hellobar label
{
    -webkit-pointer-events: all;
    -moz-pointer-events: all;
    pointer-events: all;
}

.acidjs-hellobar > div
{
    margin-top: -37px;
    padding: 0 64px;
    border-bottom: solid 3px #fff;
    font-size: 12px;
}

.acidjs-hellobar > div > div
{
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
}

.acidjs-hellobar label
{
    float: right;
    margin: 0 16px 0 0;
}

.acidjs-hellobar label span
{
    width: 30px;
    height: 30px;
    font-size: 27px;
    text-shadow: 0px 1px rgba(0, 0, 0, .75);
    border: solid 3px #fff;
    border-top: 0;
    border-radius: 0 0 4px 4px;
    cursor: pointer;
}

.acidjs-hellobar input ~ label span:first-child
{
    border-color: transparent;
    box-shadow: none;
    background: none;
}

.acidjs-hellobar input:not(:checked) ~ label span:first-child
{
    opacity: 0;
}

.acidjs-hellobar input:checked ~ label span:first-child
{
    opacity: 1;
    transition: opacity 300ms 300ms ease-in-out;
}

.acidjs-hellobar input:not(:checked) ~ label span:last-child
{
    margin-top: -33px;
}

.acidjs-hellobar input:checked ~ label span:last-child
{
    margin-top: -70px;
}

.acidjs-hellobar input:checked ~  div
{
    margin-top: 0;
}

/* Colors */
.acidjs-hellobar.acidjs-hellobar-e34c26 > div,
.acidjs-hellobar.acidjs-hellobar-e34c26 label span
{
    background: #e34c26;
}

.acidjs-hellobar.acidjs-hellobar-78ba00 > div,
.acidjs-hellobar.acidjs-hellobar-78ba00 label span
{
    background: #78ba00;
}

.acidjs-hellobar.acidjs-hellobar-1b58b8 > div,
.acidjs-hellobar.acidjs-hellobar-1b58b8 label span
{
    background: #1b58b8;
}

.acidjs-hellobar.acidjs-hellobar-ff2e12 > div,
.acidjs-hellobar.acidjs-hellobar-ff2e12 label span
{
    background: #ff2e12;
}

.acidjs-hellobar.acidjs-hellobar-aa40ff > div,
.acidjs-hellobar.acidjs-hellobar-aa40ff label span
{
    background: #aa40ff;
}

.acidjs-hellobar.acidjs-hellobar-639 > div,
.acidjs-hellobar.acidjs-hellobar-639 label span
{
    background: #639; /* My thoughts are with you and your family Eric Meyer... */
}