body {
  font-family: Helvetica;
  margin: 0;
}
a {
  text-decoration: none;
  color: #000;
}
.site-header { 
  border-bottom: 1px solid #ccc;
  padding: .5em 1em;
}

.site-header::after {
  content: "";
  display: table;
  clear: both;
}

.site-identity {
  float: left;
}

.site-identity h1 {
  font-size: 1.8em;
  margin: .7em 0 .3em 0;
  display: inline-block;
}

.site-identity img {
  max-width: 155px;
  float: left;
  margin: 0 10px 0 0;
}

.site-navigation {
  float: right;
}

.site-navigation ul, li {
  margin: 0; 
  padding: 0;
}

.site-navigation li {
  display: inline-block;
  margin: 1.4em 1em 1em 1em;
}