@media screen {
  h2 { color:#62c4dd; font-size:1.1em; cursor:pointer; }
  .hidden { display:none; }
  .sub_content { top:0; left:0; margin:2px 20px 0; }
  .bttn { width:12px; height:12px; cursor:pointer; background:url(../pics/bttn_plus_minus.png) no-repeat; display:inline-block; margin:0 5px -2px 0; }
  .bttn_plus { background-position:0 0; }
  .bttn_minus { background-position:-12px 0; }
}