body {
  font-family:Arial, Helvetica, sans-serif;
  font-size: 1em;
  background-color: #333333;
  padding: 0px;
  margin: 0px;
}

#main_container {
  background-color: #CCCCCC;
  border: 1px solig #000000;
  margin: 30px auto;
  padding: 20px;
  width: 700px;
  text-align: center;
}

.image_container {
  margin: 15px;
  padding: 5px;
  background-color: #FFFFFF;
  border: 1px solid #000000;
  float: left;
}

.image_container img {
  border: none;
}

.clearer {
  clear: both;
}