Shiny Semi-Transparent Colored Buttons - Snippet

Preview
HTML
CSS
JS

<div class="button gray"><div class="shine"></div>Button</div>
<div class="button blue"><div class="shine"></div>Button</div>
<div class="button green"><div class="shine"></div>Button</div>
<div class="button red"><div class="shine"></div>Button</div>
<div class="button purple"><div class="shine"></div>Button</div>
<div class="button orange"><div class="shine"></div>Button</div>

body {
    font-family: 'museoslab500';
    text-transform: uppercase;
    background: #333;
    font-size: 75%;
    text-align: center;
    -webkit-user-select: none;
         -o-user-select: none;
            user-select: none;
}

.button {
    min-height: 1.5em;
    display: inline-block;
    padding: 12px 36px;
    margin: 40px 5px 5px 0px;
    cursor: pointer;
    opacity: 0.9;
    
    color: #FFF;
    font-size: 1em;
    letter-spacing: 1px;
    text-shadow: rgba(0,0,0,0.9) 0px 1px 2px;
    
    background: #434343;
    border: 1px solid #242424;
   
    -webkit-border-radius: 4px;
     -khtml-border-radius: 4px;
       -moz-border-radius: 4px;
         -o-border-radius: 4px;
            border-radius: 4px;
    -webkit-box-shadow: rgba(255,255,255,0.25) 0px 1px 0px, inset rgba(255,255,255,0.25) 0px 1px 0px, inset rgba(0,0,0,0.25) 0px 0px 0px, inset rgba(255,255,255,0.03) 0px 20px 0px, inset rgba(0,0,0,0.15) 0px -20px 20px, inset rgba(255,255,255,0.05) 0px 20px 20px;
     -khtml-box-shadow: rgba(255,255,255,0.25) 0px 1px 0px, inset rgba(255,255,255,0.25) 0px 1px 0px, inset rgba(0,0,0,0.25) 0px 0px 0px, inset rgba(255,255,255,0.03) 0px 20px 0px, inset rgba(0,0,0,0.15) 0px -20px 20px, inset rgba(255,255,255,0.05) 0px 20px 20px;
       -moz-box-shadow: rgba(255,255,255,0.25) 0px 1px 0px, inset rgba(255,255,255,0.25) 0px 1px 0px, inset rgba(0,0,0,0.25) 0px 0px 0px, inset rgba(255,255,255,0.03) 0px 20px 0px, inset rgba(0,0,0,0.15) 0px -20px 20px, inset rgba(255,255,255,0.05) 0px 20px 20px;
         -o-box-shadow: rgba(255,255,255,0.25) 0px 1px 0px, inset rgba(255,255,255,0.25) 0px 1px 0px, inset rgba(0,0,0,0.25) 0px 0px 0px, inset rgba(255,255,255,0.03) 0px 20px 0px, inset rgba(0,0,0,0.15) 0px -20px 20px, inset rgba(255,255,255,0.05) 0px 20px 20px;
            box-shadow: rgba(255,255,255,0.25) 0px 1px 0px, inset rgba(255,255,255,0.25) 0px 1px 0px, inset rgba(0,0,0,0.25) 0px 0px 0px, inset rgba(255,255,255,0.03) 0px 20px 0px, inset rgba(0,0,0,0.15) 0px -20px 20px, inset rgba(255,255,255,0.05) 0px 20px 20px;
    -webkit-transition: all 0.1s linear;
     -khtml-transition: all 0.1s linear;
       -moz-transition: all 0.1s linear;
         -o-transition: all 0.1s linear;
            transition: all 0.1s linear;
}
.button:hover {
    -webkit-box-shadow: rgba(0,0,0,0.5) 0px 2px 5px, inset rgba(255,255,255,0.25) 0px 1px 0px, inset rgba(0,0,0,0.25) 0px 0px 0px, inset rgba(255,255,255,0.03) 0px 20px 0px, inset rgba(0,0,0,0.15) 0px -20px 20px, inset rgba(255,255,255,0.05) 0px 20px 20px;
     -khtml-box-shadow: rgba(0,0,0,0.5) 0px 2px 5px, inset rgba(255,255,255,0.25) 0px 1px 0px, inset rgba(0,0,0,0.25) 0px 0px 0px, inset rgba(255,255,255,0.03) 0px 20px 0px, inset rgba(0,0,0,0.15) 0px -20px 20px, inset rgba(255,255,255,0.05) 0px 20px 20px;
       -moz-box-shadow: rgba(0,0,0,0.5) 0px 2px 5px, inset rgba(255,255,255,0.25) 0px 1px 0px, inset rgba(0,0,0,0.25) 0px 0px 0px, inset rgba(255,255,255,0.03) 0px 20px 0px, inset rgba(0,0,0,0.15) 0px -20px 20px, inset rgba(255,255,255,0.05) 0px 20px 20px;
         -o-box-shadow: rgba(0,0,0,0.5) 0px 2px 5px, inset rgba(255,255,255,0.25) 0px 1px 0px, inset rgba(0,0,0,0.25) 0px 0px 0px, inset rgba(255,255,255,0.03) 0px 20px 0px, inset rgba(0,0,0,0.15) 0px -20px 20px, inset rgba(255,255,255,0.05) 0px 20px 20px;
            box-shadow: rgba(0,0,0,0.5) 0px 2px 5px, inset rgba(255,255,255,0.25) 0px 1px 0px, inset rgba(0,0,0,0.25) 0px 0px 0px, inset rgba(255,255,255,0.03) 0px 20px 0px, inset rgba(0,0,0,0.15) 0px -20px 20px, inset rgba(255,255,255,0.05) 0px 20px 20px;
}
.button:active {
    -webkit-box-shadow: rgba(255,255,255,0.25) 0px 1px 0px,inset rgba(255,255,255,0) 0px 1px 0px, inset rgba(0,0,0,0.5) 0px 0px 5px, inset rgba(255,255,255,0.03) 0px 20px 0px, inset rgba(0,0,0,0.15) 0px -20px 20px, inset rgba(255,255,255,0.05) 0px 20px 20px;
     -khtml-box-shadow: rgba(255,255,255,0.25) 0px 1px 0px,inset rgba(255,255,255,0) 0px 1px 0px, inset rgba(0,0,0,0.5) 0px 0px 5px, inset rgba(255,255,255,0.03) 0px 20px 0px, inset rgba(0,0,0,0.15) 0px -20px 20px, inset rgba(255,255,255,0.05) 0px 20px 20px;
       -moz-box-shadow: rgba(255,255,255,0.25) 0px 1px 0px, inset rgba(255,255,255,0) 0px 1px 0px, inset rgba(0,0,0,0.5) 0px 0px 5px, inset rgba(255,255,255,0.03) 0px 20px 0px, inset rgba(0,0,0,0.15) 0px -20px 20px, inset rgba(255,255,255,0.05) 0px 20px 20px;
         -o-box-shadow: rgba(255,255,255,0.25) 0px 1px 0px, inset rgba(255,255,255,0) 0px 1px 0px, inset rgba(0,0,0,0.5) 0px 0px 5px, inset rgba(255,255,255,0.03) 0px 20px 0px, inset rgba(0,0,0,0.15) 0px -20px 20px, inset rgba(255,255,255,0.05) 0px 20px 20px;
            box-shadow: rgba(255,255,255,0.25) 0px 1px 0px, inset rgba(255,255,255,0) 0px 1px 0px, inset rgba(0,0,0,0.5) 0px 0px 5px, inset rgba(255,255,255,0.03) 0px 20px 0px, inset rgba(0,0,0,0.15) 0px -20px 20px, inset rgba(255,255,255,0.05) 0px 20px 20px;
}
.shine {
    display: block;
    position: relative;
    background: -moz-linear-gradient(left, rgba(255,255,255,0) 0%, rgba(255,255,255,1) 50%, rgba(255,255,255,0) 100%);
    background: -webkit-gradient(linear, left top, right top, color-stop(0%,rgba(255,255,255,0)), color-stop(50%,rgba(255,255,255,1)), color-stop(100%,rgba(255,255,255,0)));
    background: -webkit-linear-gradient(left, rgba(255,255,255,0) 0%,rgba(255,255,255,1) 50%,rgba(255,255,255,0) 100%);
    background: -o-linear-gradient(left, rgba(255,255,255,0) 0%,rgba(255,255,255,1) 50%,rgba(255,255,255,0) 100%);
    background: -ms-linear-gradient(left, rgba(255,255,255,0) 0%,rgba(255,255,255,1) 50%,rgba(255,255,255,0) 100%);
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#00ffffff', endColorstr='#00ffffff',GradientType=1 );
    background: linear-gradient(left, rgba(255,255,255,0) 0%,rgba(255,255,255,1) 50%,rgba(255,255,255,0) 100%);
    padding: 0px 12px;
    top: -12px;
    left: -24px;
    height: 1px;
    -webkit-box-shadow: rgba(255,255,255,0.2) 0px 1px 5px;
     -khtml-box-shadow: rgba(255,255,255,0.2) 0px 1px 5px;
       -moz-box-shadow: rgba(255,255,255,0.2) 0px 1px 5px;
         -o-box-shadow: rgba(255,255,255,0.2) 0px 1px 5px;
            box-shadow: rgba(255,255,255,0.2) 0px 1px 5px;
    -webkit-transition: all 0.3s ease-in-out;
     -khtml-transition: all 0.3s ease-in-out;
       -moz-transition: all 0.3s ease-in-out;
         -o-transition: all 0.3s ease-in-out;
            transition: all 0.3s ease-in-out;
}
.button:hover .shine {left: 24px;}
.button:active .shine {opacity: 0;}

.button.gray {background: #555;}
.button.blue {background: #3a617e;}
.button.green {background: #477343;}
.button.red {background: #723131;}
.button.purple {background: #4b3f5e;}
.button.orange {background: #624529;}