Edit in JSFiddle

<div class="container">
<a class="button grey">
  <div class="arrow">
    <span class="top"></span>
    <span class="bottom"></span>
    <span class="bottomShadow"></span>
  </div>
  <span class="bar"></span>
  Download
</a>


<a class="button blue">
  <div class="arrow">
    <span class="top"></span>
    <span class="bottom"></span>
    <span class="bottomShadow"></span>
  </div>
  <span class="bar"></span>
  Download
</a>

<a class="button green">
  <div class="arrow">
    <span class="top"></span>
    <span class="bottom"></span>
    <span class="bottomShadow"></span>
  </div>
  <span class="bar"></span>
  Download
</a>

<a class="button red">
  <div class="arrow">
    <span class="top"></span>
    <span class="bottom"></span>
    <span class="bottomShadow"></span>
  </div>
  <span class="bar"></span>
  Download
</a>

<a class="button orange">
  <div class="arrow">
    <span class="top"></span>
    <span class="bottom"></span>
    <span class="bottomShadow"></span>
  </div>
  <span class="bar"></span>
  Download
</a>

<a class="button yellow">
  <div class="arrow">
    <span class="top"></span>
    <span class="bottom"></span>
    <span class="bottomShadow"></span>
  </div>
  <span class="bar"></span>
  Download
</a>

</div>

body {
    padding: 20px;
    background: black;
}

div.container {
    position: relative;
    background: #1f1f1f;
    margin: 0 auto;
    width: 500px;
    height: 100px;
    padding: 120px 0px;
    /* border-radius */
    -webkit-border-radius: 5px;
    -moz-border-radius: 5px;
    border-radius: 5px;
    /* box-shadow */
    -webkit-box-shadow: rgba(0,0,0,0.2) 0px 1px 3px;
    -moz-box-shadow: rgba(0,0,0,0.2) 0px 1px 3px;
    box-shadow: rgba(0,0,0,0.2) 0px 1px 3px;
    text-align: center;
}

a.button {
    position: relative;
    height: 15px;
    padding: 12px 20px 15px 68px;
    cursor: pointer;
    text-align: Right;
    font-weight: bold;
    font-size: 18px;
    -webkit-border-radius: 3px;
    -moz-border-radius: 3px;
    border-radius: 3px;
    -webkit-box-shadow: 2px 2px 2px 0 rgba(0,0,0,.3);
    -moz-box-shadow: 2px 2px 2px 0 rgba(0,0,0,.3);
    box-shadow: 2px 2px 2px 0 rgba(0,0,0,.3);
    display: inline-block !important;
    font: 700 15px 'Arial', Helvetica, Clean, sans-serif;
    margin: 0px 0px 20px 10px;
    position: relative;
    text-decoration: none;
    transition: background-position .2s ease, margin .1s ease;
    -webkit-transition: background-position .2s ease, margin .1s ease;
    -moz-transition: background-position .2s ease, margin .1s ease;
    background-repeat: repeat-x;
}

a.button:hover { background-position: 0 10px }

a.button:active {
    -webkit-box-shadow: -1px -1px 2px 0 rgba(0,0,0,.3);
    -moz-box-shadow: -1px -1px 2px 0 rgba(0,0,0,.3);
    box-shadow: -1px -1px 2px 0 rgba(0,0,0,.3);
    margin: 2px 0 20px 10px;
}

a.button span.bar {
    width: 1px;
    height: 30px;
    position: absolute;
    background: black;
    top: 5px;
    left: 50px;
}

a.button div.arrow {
    position: absolute;
    left: 20px;
    top: 14px;
}

a.button div.arrow span.top {
    position: absolute;
    width: 6px;
    height: 9px;
    background: #000;
    top: 0;
    left: 3px;
}

a.button div.arrow span.bottom,
div.arrow span.bottomShadow {
    position: absolute;
    width: 0px;
    height: 0px;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-top: 8px solid black;
    top: 9px;
    left: -2px;
    z-index: 2;
}

a.button div.arrow span.bottomShadow {
    z-index: 1;
    left: -1px;
}

/* GRAY
   ================================================== */

a.grey {
    background-color: #888;
    background-image: -webkit-linear-gradient(top, #888, #333);
    background-image: -moz-linear-gradient(top, #888, #333);
    background-image: -ms-linear-gradient(top, #888, #333);
    background-image: -o-linear-gradient(top, #888, #333);
    background-image: linear-gradient(top, #888, #333);
    text-shadow: 1px 1px 1px rgba(255,255,255,.2);
    border-top: 1px solid #aaa;
}

a.grey span.bar {
    -webkit-box-shadow: 1px 1px 1px rgba(255,255,255,.2);
    -moz-box-shadow: 1px 1px 1px rgba(255,255,255,.2);
    box-shadow: 1px 1px 1px rgba(255,255,255,.2);
}

a.grey div.arrow span.top {
    -webkit-box-shadow: 1px 1px 1px rgba(255,255,255,.2);
    -moz-box-shadow: 1px 1px 1px rgba(255,255,255,.2);
    box-shadow: 1px 1px 1px rgba(255,255,255,.2);
}

a.grey div.arrow span.bottomShadow { border-top: 8px solid rgba(255, 255, 255, 0.2) }

/* BLUE
   ================================================== */

a.blue {
    background-color: #00aeef;
    background-image: -webkit-linear-gradient(top, #00aeef, #00587a);
    background-image: -moz-linear-gradient(top, #00aeef, #00587a);
    background-image: -ms-linear-gradient(top, #00aeef, #00587a);
    background-image: -o-linear-gradient(top, #00aeef, #00587a);
    background-image: linear-gradient(top, #00aeef, #00587a);
    text-shadow: 1px 1px 1px #23aaff;
    border-top: 1px solid #23ccff;
}

a.blue span.bar {
    -webkit-box-shadow: 1px 1px 1px #23aaff;
    -moz-box-shadow: 1px 1px 1px #23aaff;
    box-shadow: 1px 1px 1px #23aaff;
}

a.blue div.arrow span.top {
    -webkit-box-shadow: 1px 1px 1px #23aaff;
    -moz-box-shadow: 1px 1px 1px #23aaff;
    box-shadow: 1px 1px 1px #23aaff;
}

a.blue div.arrow span.bottomShadow { border-top: 8px solid #23aaff }

/* GREEN
   ================================================== */

a.green {
    background-color: #68c800;
    background-image: -webkit-linear-gradient(top, #68c800, #367100);
    background-image: -moz-linear-gradient(top, #68c800, #367100);
    background-image: -ms-linear-gradient(top, #68c800, #367100);
    background-image: -o-linear-gradient(top, #68c800, #367100);
    background-image: linear-gradient(top, #68c800, #367100);
    text-shadow: 1px 1px 1px #67c800;
    border-top: 1px solid #67e800;
}

a.green span.bar {
    -webkit-box-shadow: 1px 1px 1px #67c800;
    -moz-box-shadow: 1px 1px 1px #67c800;
    box-shadow: 1px 1px 1px #67c800;
}

a.green div.arrow span.top {
    -webkit-box-shadow: 1px 1px 1px #67c800;
    -moz-box-shadow: 1px 1px 1px #67c800;
    box-shadow: 1px 1px 1px #67c800;
}

a.green div.arrow span.bottomShadow { border-top: 8px solid #67c800 }

/* RED
   ================================================== */

a.red {
    background-color: #ee5f5b;
    background-image: -webkit-linear-gradient(top, #ee5f5b, #973431);
    background-image: -moz-linear-gradient(top, #ee5f5b, #973431);
    background-image: -ms-linear-gradient(top, #ee5f5b, #973431);
    background-image: -o-linear-gradient(top, #ee5f5b, #973431);
    background-image: linear-gradient(top, #ee5f5b, #973431);
    text-shadow: 1px 1px 1px #ed5d69;
    border-top: 1px solid #ed8d69;
}

a.red span.bar {
    -webkit-box-shadow: 1px 1px 1px #ed5d69;
    -moz-box-shadow: 1px 1px 1px #ed5d69;
    box-shadow: 1px 1px 1px #ed5d69;
}

a.red div.arrow span.top {
    -webkit-box-shadow: 1px 1px 1px #ed5d69;
    -moz-box-shadow: 1px 1px 1px #ed5d69;
    box-shadow: 1px 1px 1px #ed5d69;
}

a.red div.arrow span.bottomShadow { border-top: 8px solid #ed5d69 }

/* ORANGE
   ================================================== */

a.orange {
    background-color: #ff8636;
    background-image: -webkit-linear-gradient(top, #ff8636, #9a3e00);
    background-image: -moz-linear-gradient(top, #ff8636, #9a3e00);
    background-image: -ms-linear-gradient(top, #ff8636, #9a3e00);
    background-image: -o-linear-gradient(top, #ff8636, #9a3e00);
    background-image: linear-gradient(top, #ff8636, #9a3e00);
    text-shadow: 1px 1px 1px #ff7f42;
    border-top: 1px solid #ffa542;
}

a.orange span.bar {
    -webkit-box-shadow: 1px 1px 1px #ff7f42;
    -moz-box-shadow: 1px 1px 1px #ff7f42;
    box-shadow: 1px 1px 1px #ff7f42;
}

a.orange div.arrow span.top {
    -webkit-box-shadow: 1px 1px 1px #ff7f42;
    -moz-box-shadow: 1px 1px 1px #ff7f42;
    box-shadow: 1px 1px 1px #ff7f42;
}

a.orange div.arrow span.bottomShadow { border-top: 8px solid #ff7f42 }

/* YELLOW
   ================================================== */

a.yellow {
    background-color: #fcd116;
    background-image: -webkit-linear-gradient(top, #fcd116, #705b00);
    background-image: -moz-linear-gradient(top, #fcd116, #705b00);
    background-image: -ms-linear-gradient(top, #fcd116, #705b00);
    background-image: -o-linear-gradient(top, #fcd116, #705b00);
    background-image: linear-gradient(top, #fcd116, #705b00);
    text-shadow: 1px 1px 1px #ffc33d;
    border-top: 1px solid #ffff3d;
}

a.yellow span.bar {
    -webkit-box-shadow: 1px 1px 1px #ffc33d;
    -moz-box-shadow: 1px 1px 1px #ffc33d;
    box-shadow: 1px 1px 1px #ffc33d;
}

a.yellow div.arrow span.top {
    -webkit-box-shadow: 1px 1px 1px #ffc33d;
    -moz-box-shadow: 1px 1px 1px #ffc33d;
    box-shadow: 1px 1px 1px #ffc33d;
}

a.yellow div.arrow span.bottomShadow { border-top: 8px solid #ffc33d }

/* FOR DEMO PURPOSE ONLY
   ================================================== */

a.grey {
    position: absolute;
    top: 80px;
    left: 80px;
}

a.blue {
    position: absolute;
    top: 80px;
    left: 260px;
}

a.green {
    position: absolute;
    top: 140px;
    left: 80px;
}

a.red {
    position: absolute;
    top: 140px;
    left: 260px;
}

a.orange {
    position: absolute;
    top: 200px;
    left: 80px;
}

a.yellow {
    position: absolute;
    top: 200px;
    left: 260px;
}