a.button {
    display:block;
    text-align: center;
    height: 50px;
    width:160px;
    margin: 20px auto;
    line-height: 50px;
    padding-left: 38px;
    position: relative;
    background:rgb(41,127,184);
    color:rgb(255,255,255);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 5px;
    -moz-border-radius: 5px;
    -webkit-border-radius: 5px;
    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);
  }
  
  a.button span {
    position: absolute;
    left: 0;
    width: 50px;
    background-color:rgba(0,0,0,0.5);
    -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);
  }
  a.button:hover span, .button.active span {
    background:#fff;
    border-right: 1px solid  rgba(0,0,0,0.3);
    color: #297FB8;
  }