<link href='//netdna.bootstrapcdn.com/font-awesome/4.0.3/css/font-awesome.css' rel='stylesheet'/>

<div class="whitebuttondemo">
<a href="#" target="_blank">Demo Button</a><br>
<span class="up">click to Download</span></div>
<br>

<div class="whitebutton">
<a href="#" target="_blank">Download</a><br>
<span class="up">click to Download</span><br>
<span class="down">1.6MB .rar</span></div>

.whitebutton {
    margin: 20px auto;
    padding: 20px 0;
    width: 200px;
}

.whitebutton a {
    background: #fff;
    color: #666;
    display: block;
    font-size: 17px;
    font-weight: 700;
    font-family: 'Arial',Verdana,sans-serif;
    height: 50px;
    line-height: 50px;
    text-align: center;
    text-decoration: none;
    text-transform: uppercase;
    width: 200px;
    position: relative;
    z-index: 2;
}

.whitebutton a:before {
    content: '\f019';
    font-family: FontAwesome;
    font-weight: normal;
    padding: 5px;
    margin-left: -12px;
    margin-right: 6px;
}

.whitebutton span {
    background: #100;
    color: #fff;
    display: block;
    font-size: 12px;
    font-family: 'Arial', Verdana,sans-serif;
    height: 40px;
    line-height: 40px;
    text-align: center;
    width: 200px;
    z-index: 1;
    text-transform: uppercase;
    font-weight: bold;
}

.whitebutton .up {
    background: #e25734;
    margin: -25px auto;
    opacity: 0;
    border-radius: 0 0 5px 5px;
    transform: translate(0,-50px);
    transition: 350ms;
}

.whitebutton .down {
    margin: -30px auto;
    opacity: 0;
    border-radius: 5px 5px 0 0;
    transform: translate(0,-50px);
    transition: 350ms;
}

.whitebutton .down:before {
    content:'\f14a';
    font-family: FontAwesome;
    font-weight: normal;
    margin-right: 6px;
    color: #aaa;
}

.whitebutton:hover .up {
    opacity: 1;
    transform: translate(0,0);
}

.whitebutton:hover .down {
    opacity: 1;
    transform: translate(0,-90px);
}

.whitebuttondemo {
    margin: 20px auto;
    padding: 20px 0;
    width: 200px;
}

.whitebuttondemo a {
    background: #e25734;
    color: #fff;
    display: block;
    font-size: 17px;
    font-weight: 700;
    font-family:'Arial',Verdana,sans-serif;
    height: 50px;
    line-height: 50px;
    text-align: center;
    text-decoration: none;
    text-transform: uppercase;
    width: 200px;
    position: relative;
    z-index: 2;
    transition: 350ms;
}

.whitebuttondemo a:before {
    content:'\f004';
    font-family: FontAwesome;
    font-weight: normal;
    padding: 8px;
    margin-left: -12px;
    margin-right: 6px;
}

.whitebuttondemo a:hover {
    color: #fff;
}

.whitebuttondemo span {
    background: #444;
    color: #fff;
    display: block;
    font-size: 12px;
    font-family: 'Arial', Verdana,sans-serif;
    height: 40px;
    line-height: 40px;
    text-align: center;
    width: 200px;
    z-index: 1;
    text-transform: uppercase;
    font-weight: bold;
}

.whitebuttondemo .up {
    background: #444;
    margin: -25px auto;
    opacity: 0;
    border-radius: 0 0 10px 10px;
    transform: translate(0,-50px);
    transition: 350ms;
}

.whitebuttondemo:hover .up {
    opacity: 1;
    transform: translate(0,0);
}