gistfile1.css

.nav-icon {
  position: fixed;
  width: 32px;
  height: 32px;
  margin-top: 7px;
  background: no-repeat;
}

.nav-icon-github {
    background: url("../images/github.png");
}

.nav-icon-facebook{
    background: url("../images/facebook.png");
    margin-bottom: 4px;
}

.center {
    text-align: center;
}

section {
    width: 100%;
}