body.login #backtoblog,
body.login #nav {
  padding: 12px;
  margin-left: 0;
  margin-bottom: 20px;
  background-color: #fff;
  -webkit-box-shadow: 0 1px 1px 0 rgba(0,0,0,.1);
  box-shadow: 0 1px 1px 0 rgba(0,0,0,.1);
}
body.login {
  background-size: cover;
  background-position: center;
}