.button {

  display: inline-block;
  height: 40px;
  line-height: 40px;
  padding-right: 30px;
  padding-left: 70px;
  position: relative;
  text-align: center;
  background-color:rgb(0,0,0);
  color:rgb(255,255,255);
  text-decoration: none;
  text-transform: lowercase;
  letter-spacing: 1px;
  margin-bottom: 15px;
  text-shadow:0px 1px 0px rgba(0,0,0,0.5);
-ms-filter:"progid:DXImageTransform.Microsoft.dropshadow(OffX=0,OffY=1,Color=#ff123852,Positive=true)";zoom:1;
filter:progid:DXImageTransform.Microsoft.dropshadow(OffX=0,OffY=1,Color=#ff123852,Positive=true);

  -moz-box-shadow:0px 2px 2px rgba(0,0,0,0.2);
  -webkit-box-shadow:0px 2px 2px rgba(0,0,0,0.2);
  box-shadow:0px 2px 2px rgba(0,0,0,0.2);
  -ms-filter:"progid:DXImageTransform.Microsoft.dropshadow(OffX=0,OffY=2,Color=#33000000,Positive=true)";
filter:progid:DXImageTransform.Microsoft.dropshadow(OffX=0,OffY=2,Color=#33000000,Positive=true);
}

.button:hover{
    text-decoration: none;
  color: #eeeaee;
}

.button p{font-size: 14px;}
.button span {
  position: absolute;
  left: 0;
  width: 50px;
  font-size:30px;
  -webkit-border-top-left-radius: 5px;
-webkit-border-bottom-left-radius: 5px;
-moz-border-radius-topleft: 5px;
-moz-border-radius-bottomleft: 5px;
border-top-left-radius: 5px;
border-bottom-left-radius: 5px;
border-right: 1px solid  rgba(0,0,0,0.15);
    text-decoration: none;
}

.button.twitter {
  background: #00acee;
}

.button.facebook {
 background: #3b5998;
}

.button.google-plus{
  background: #db4a39;
}

.button.linkedin {
  background: #0e76a8;
}

.button.youtube {
 background: #c4302b;
}

.button.github{
  background: #171515;
}

.button.android {
  background: #a4c639;
}

.button.skype {
 background: #00aff0;
 }

.button.dropbox{
  background: #3d9ae8;
}

.button.foursquare{
  background: #25a0ca;
}

.button.apple{
  background: #cdcdcd;
}

.button.dribbble{
  background: #ea4c89;
}

.button.instagram{
  background: #3f729b;
}

.button.pinterest{
  background: #c8232c;
}

.button.stackexchange{
  background: #ef8236;
}

.button.flickr{
  background: #ff0084;
}

.text-center{
  text-align: center;
}