/*
25/08/10 padding: 0.6em 1.2em;
*/

body {
    font-size: 14px;
    width:640px;
    height:480;
}

[id^=b]{border-style: solid;
      border-width: 3px;
      border-color: #ccc #999 #999 #ccc;
      border-radius: 7px;
      padding: 0.8em 1.6em;
      background:  #ccc; 
      background:  -moz-linear-gradient(top, #fff, #ccc); 
      background: -webkit-gradient(linear, left top, left bottom, from(#fff), to(#ccc));
          text-decoration: none;
      }
      a:hover{border-color: #ca0 #ca0 #ca0 #ca0;}
      .lesson{font-size: 1.8em; color: #E70;}
      .exercise{font-size: 1.5em; color: #A60; font-weight: bold; }
      .sub{font-size: 1.1em; color: #A60; font-weight: bold; } 
      
      table {background-color: #ffd;}