title: CSS: Anchor height depends on font-size
body: <p>I am trying to have a image on CSS text button. If I increase font-size to 26 px, image appear properly.I want to keep the font-size at 20px but fit image properly.</p>
  
  <pre><code>a.button {
    border: 1px solid #979797;
  }
  a.button.icon {
    padding-left: 11px;
  }
  
  a.button.icon span{
    padding-left: 48px;
    background: url(../img/gmail2.png) no-repeat;
  }
  a.button.icon.chat span {
    background-position: 0px -48;
  }
  
  a.button {
    background-image: -moz-linear-gradient(top, #ffffff, #dbdbdb);
    background-image: -webkit-gradient(linear,left top,left bottom,
        color-stop(0, #ffffff),color-stop(1, #dbdbdb));
    filter: progid:DXImageTransform.Microsoft.gradient
        (startColorStr='#ffffff', EndColorStr='#dbdbdb');
    -ms-filter: "progid:DXImageTransform.Microsoft.gradient
        (startColorStr='#ffffff', EndColorStr='#dbdbdb')";
    border: 1px solid #fff;
    -moz-box-shadow: 0px 0px 4px rgba(0, 0, 0, 0.4);
    -webkit-box-shadow: 0px 0px 4px rgba(0, 0, 0, 0.4);
    box-shadow: 0px 0px 4px rgba(0, 0, 0, 0.4);
    border-radius: 2px;
    -webkit-border-radius: 2px;
    -moz-border-radius: 2px;
    padding: 5px 5px;
    text-decoration: none;
    text-shadow: #fff 0 1px 0;
    float: left;
    margin-right: 15px;
    margin-bottom: 15px;
    display: block;
    color: #597390;
    line-height: 38px;
    font-size: 20px;
    font-weight: bold;
  }
  </code></pre>