* { padding: 0; margin: 0; }

html, body, td
{
  font-family: sans-serif;
  margin: 0px;
  padding: 0px;
  font-size: 12px;
  line-height: 20px;
}

h1
{
  font-size: 18px;
  line-height: 35px;
}

div#main
{
  position: absolute;
  top: 50%;
  left: 50%;
  margin: -250px 0 0 -250px;
  width: 500px;
  height: 500px;
}

img.icon
{
  vertical-align: bottom;
}