.js-drawer-open-left .header-container{
  position: fixed;
  top:0px;
  left:0px;
  width:100%;
}
.mobile-nav{
  overflow: auto;
    max-height: 80vh;
    margin:20px -20px 0 -20px;
}
 

@media only screen and (min-width: 821px){
  .site-header .large--six-eighths {
    width: 67%;
}
.site-header .large--one-eighth {
  width: 16.5%;
}
}