discourse/app/assets/stylesheets/mobile/menu-panel.scss

.hamburger-panel .menu-panel.slide-in {
  left: 0;
}
.header-cloak {
  height: 100vh;
  width: 100vw;
  position: fixed;
  background-color: black;
  opacity: 0.5;
  top: 0;
  left: 0;
  display: none;
  touch-action: pan-y pinch-zoom;
  &.animate {
    transition: opacity 0.2s ease-out;
  }
}

.user-menu .quick-access-profile li:not(.show-all) {
  margin: 0.5em 0 0.75em;
  padding: 0.75em;
  border: 1px solid $primary-low;
}