html {
  background: #e0e0e0;
}

body {
  font-family: arial, sans-serif;
  margin: 0;
  padding: 0;
}

#main {
  width: 850px;
  overflow: hidden;
  background: #ffffff;
  padding: 10px 26px 30px 26px;
  margin: 0 auto 32px auto;
  border-radius: 0 0 10px 10px;
  box-shadow: 3px 3px 5px #c0c0c0;
}

#footer {
  text-align: center;
  color: #808080;
  font-size: 80%;
  margin-top: 40px;
}

.code {
  font-family: "courier new", monospace;
}

div.code {
  margin: 5px 20px;
  padding: 10px 10px;
  border: 1px solid #d0d0d0;
  border-radius: 10px;
  box-shadow: 3px 3px 5px #e0e0e0;
}

h1 {
  background: #303050;
  color: #ffffff;
  padding: 1px 9px;
  text-align: center;
  border-radius: 10px;
  box-shadow: 3px 3px 5px #d0d0d0;
}

h2, h3 {
  border-bottom: 1px solid #e0e0e0;
  margin-top: 1.5em;
}

img {
  border: none;
}