body {
font-family: Impact;
}
.button {
height: 80px;
width: 180px;
cursor: pointer;
margin: 50px auto;
}
.button .outer {
position: relative;
width: 100%;
height: 100%;
padding: 10px;
background: rgba(0,0,0,0.65);
border-radius: 14px;
-webkit-border-radius: 14px;
-moz-border-radius: 14px;
box-shadow: inset rgba(0,0,0,0.85) 0px 1px 5px;
-webkit-box-shadow: inset rgba(0,0,0,0.85) 0px 1px 5px;
-moz-box-shadow: inset rgba(0,0,0,0.85) 0px 1px 5px;
-webkit-transform: perspective(500px) rotateX(35deg);
-moz-transform: perspective(500px) rotateX(35deg);
}
.button .outer .height {
position: relative;
height: 100%;
margin-top: -15px;
padding-bottom: 15px;
background: #39a02d;
border-radius: 16px;
-webkit-border-radius: 16px;
-moz-border-radius: 16px;
box-shadow: rgba(0,0,0,0.85) 0px 1px 1px, inset rgba(0,0,0,0.35) 0px -2px 8px;
-webkit-box-shadow: rgba(0,0,0,0.85) 0px 1px 1px, inset rgba(0,0,0,0.35) 0px -2px 8px;
-moz-box-shadow: rgba(0,0,0,0.85) 0px 1px 1px, inset rgba(0,0,0,0.35) 0px -2px 8px;
-webkit-transition: all 0.1s ease-in-out;
-moz-transition: all 0.1s ease-in-out;
}    
.button:hover .outer .height {
margin-top: -10px;
padding-bottom: 10px;
background: #3aaf2d;
box-shadow: rgba(0,0,0,0.25) 0px 1px 1px, inset rgba(0,0,0,0.35) 0px -2px 6px;
-webkit-box-shadow: rgba(0,0,0,0.25) 0px 1px 1px, inset rgba(0,0,0,0.35) 0px -2px 6px;
-moz-box-shadow: rgba( 0,0,0,0.25) 0px 1px 1px, inset rgba(0,0,0,0.35) 0px -2px 6px;
}
.button:active .outer .height {
margin-top: 0px;
padding-bottom: 0px;
}
.button .outer .height .inner {
line-height: 2.8em;
font-size: 30px;
letter-spacing: .05em;
position: relative;
height: 100%;
text-align: center;
text-shadow: #8aff7b 0px 0px 1px;
background: #44d135;
background: -moz-linear-gradient(top, #80ec75 0%, #43d034 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#80ec75), color-stop(100%,#43d034)); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top, #80ec75 0%,#43d034 100%); /* Chrome10+,Safari5.1+ */
background: linear-gradient(top, #80ec75 0%,#43d034 100%); /* W3C */
border-radius: 12px;
-webkit-border-radius: 12px;
-moz-border-radius: 12px;
box-shadow: inset rgba(255,255,255,0.85) 0px 0px 1px;
-webkit-box-shadow: inset rgba(255,255,255,0.85) 0px 0px 1px;
-moz-box-shadow: inset rgba(255,255,255,0.85) 0px 0px 1px;
-webkit-transition: all 0.1s ease-in-out;
-moz-transition: all 0.1s ease-in-out;
}
.button:hover .outer .height .inner{
text-shadow: #99f48d 0px 0px 1px;
background: #43d034; /* Old browsers */
background: -moz-linear-gradient(top, #43d034 0%, #67e45c 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#43d034), color-stop(100%,#67e45c)); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top, #43d034 0%,#67e45c 100%); /* Chrome10+,Safari5.1+ */
background: linear-gradient(top, #43d034 0%,#67e45c 100%); /* W3C */
}
.button:active .outer .height .inner{
text-shadow: #319926 0px 1px 0px;
border-radius: 16px;
-webkit-border-radius: 16px;
-moz-border-radius: 16px;
box-shadow: inset rgba(0,0,0,0.9) 0px 0px 8px;
-webkit-box-shadow: inset rgba(0,0,0,0.9) 0px 0px 8px;
-moz-box-shadow: inset rgba(0,0,0,0.9) 0px 0px 8px;
background: #1d7d12; /* Old browsers */
background: -moz-linear-gradient(top, #1d7d12 0%, #4fd342 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#1d7d12), color-stop(100%,#4fd342)); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top, #1d7d12 0%,#4fd342 100%); /* Chrome10+,Safari5.1+ */
background: linear-gradient(top, #1d7d12 0%,#4fd342 100%); /* W3C */
}

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<div class="button"><div class="outer"><div class="height"><div class="inner">DOWNLOAD</div></div></div></div>

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