* {
  margin: 0;
  padding: 0;
}

h1 {
  font-size: 120%;
  font-weight: 800;
  margin: 0 0 1em 0;
}

p {
  margin: 2em 0 2em 0;
}

div#page_margins { 
  margin: 1em 0 0 0;
}

div#page {
  margin: auto;
  width: 700px;
}

div#main {
  margin: 0 0 0 7em;
  width: 30em;
}

div#main img {
  margin: 0 0 0 4em;
}

#nav {
  margin: 2em 7em 0 7em;
  border-bottom: 3px solid #3e3e3e;
}

ul {
  margin: 0 0 0 3em;
}

ul li {
  float: left;
  margin: 0 2em 0 0;
  padding: 0.3em;
  list-style: none;
  border: 3px solid #3e3e3e;
  background: #eee;
}

ul li a {
  text-decoration: none;
  color: #3e3e3e; 
}

.cl_left {
  clear: left;
  margin: 0;
  padding: 0;
  line-height; 0;
}