span.checkbox {
  width: 19px;
  height: 25px;
  padding: 0 5px 0 0;
  background: url(images/checkbox.png) no-repeat;
  display: block;
  clear: left;
  float: left;
}
span.radio {
  width: 19px;
  height: 25px;
  padding: 0 5px 0 0;
  background: url(images/radio.png) no-repeat;
  display: block;
  clear: left;
  float: left;
}
span.select {
  position: absolute;
  width: 168px; /* With the padding included, the width is 200 pixels: the actual width of the image. */
  height: 21px;
  padding: 0 24px 0 8px;
  color: #fff;
  font: 12px/21px arial,sans-serif;
  background: url(images/select.png) no-repeat;
  overflow: hidden;
}