*,
*:before,
*:after {
  box-sizing: border-box;
}

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

h2 {
  margin: 0;
}

a {
  text-decoration: none;
  color: #3498DB;
}

#main {
  margin: 20px;
}
.contact {
  margin: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid #777;
}
.contact h2 {
  margin-bottom: 1em;
}
section{
  margin-top: 3em;
  clear: both;
}
section h2 {
  margin-bottom: 0.5em;
}
section .screenshots {

}
section .screenshots img{
  width: 230px;
  margin: 10px 20px;
  float: left;
}