CSS loading bar

by salitrapraveen

HTML

<div class="bar">
   <span class="sphere"></span>
</div>

CSS

.bar {
    font-size: 20px;
    width: 10em;
    height: 1em;
    position: relative;
    margin: 100px auto;
    border-radius: .5em;
    background: rgba(255,255,255,0.6);
    box-shadow: 
        0 0 0 .05em rgba(100,100,100,0.075),
        0 0 0 .25em rgba(0,0,0,0.1),
        inset 0 .1em .05em rgba(0,0,0,0.1),
        0 .05em rgba(255,255,255,0.7);
}

.bar:after {
    content: "Please wait.";
    position: absolute;
    left: 25%;
    top: 150%;
    font-family: sans-serif;
    font-size: 1em;
    color: #555;
    text-shadow: 0 .05em rgba(255,255,255,0.7);
}

.bar .sphere {
    border-radius: 50%;
    width: 1em;
    height: 100%;
    background: -webkit-linear-gradient(#eee, #ddd);
    background: -moz-linear-gradient(#eee, #ddd);
    background: -ms-linear-gradient(#eee, #ddd);
    background: -o-linear-gradient(#eee, #ddd);
    background: linear-gradient(#eee, #ddd);
    box-shadow:
        inset 0 .15em .1em rgba(255,255,255,0.3),
        inset 0 -.1em .15em rgba(0,0,0,0.15),
        0 0 .25em rgba(0,0,0,0.3);
    display: block;
    -webkit-animation: slide 1.75s ease-in-out infinite alternate;
    -moz-animation: slide 1.75s ease-in-out infinite alternate;
    -ms-animation: slide 1.75s ease-in-out infinite alternate;
    -o-animation: slide 1.75s ease-in-out infinite alternate;
    animation: slide 1.75s ease-in-out infinite alternate;
}

@-webkit-keyframes slide {
    to { margin-left: 90%; }
}

@-moz-keyframes slide {
    to { margin-left: 90%; }
}

@-ms-keyframes slide {
    to { margin-left: 90%; }
}

@-o-keyframes slide {
    to { margin-left: 90%; }
}

@keyframes slide {
    to { margin-left: 90%; }
}