body {
    background: #fff;
    font-family: Arial,"Hiragino Kaku Gothic Pro",sans-serif,Helvetica,Geneva;
    font-weight: normal;
    color: #333;
    font-size: 13px;
}

.btn {
  background: #000000;
  /*font-size: 11px;
  padding: 3px 3px 3px 3px;
  margin: 2px 2px 2px 2px;
  text-align: center;
  text-decoration: none;
  color: #ffffff;
  border: 1px solid #000000;*/
  cursor: pointer;
}

.btn:hover {
  background: #FF0000;
  /*color: #ffffff;
  border: 1px solid #FF0000;
  text-decoration: none;*/
}