.main-header {
  background: #222;
  padding: 0px 0 0px 65px;
  color: white;
  position: relative;
  width: 100%;
  left: 0;
  transition: all 0.3s ease;
}

.main-header a {
  position: absolute;
  right: 20px;
  top: 30px;
  color: white;
  font-size: 32px; 
}

.page-wrap {
  float: left;
  width: 100%;
  transition: width 0.3s ease;
}

.site-nav {
  position: fixed;
  top: 0;
  width: 0;
  height: 100%;
  background: #0081ac;
  overflow-y: auto;
  transition: width 0.3s ease;
  white-space: nowrap;
  text-transform: uppercase; right:0;
}

.site-nav a {
  display: block;
  border-bottom: 1px solid #00a9e1;
  color: white;
  padding:15px 5%;
}

.site-nav a:hover,
.site-nav a:focus {
  background: #0096c8;
}

.site-nav:after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
}

.close-menu {
  display: none;
}

#site-nav:target {
  width: 20%;
}

#site-nav:target + .page-wrap {
  width: 80%;
}

#site-nav:target + .page-wrap .close-menu {
  display: block;
}

#site-nav:target + .page-wrap .main-header {
  width: 80%;
  right: 20%;
}