.main-nav__contents {
  z-index: 0;
  position: fixed;
  display: flex;
  flex-direction: column;
  top: 60px;
  left: 0px;
  width: 300px;
  bottom: 0px;
  line-height: 50px;
  background-color: #fff;
  overflow-y: auto;
  overflow-x: hidden;
  transition: transform 200ms ease;
  left: 0px;
  box-shadow: 0 2px 2px rgba(0, 0, 0, 0.3);
}

.main-nav__item {
  position: relative;
  height: 50px;
  line-height: 50px;
  border-bottom: 1px solid #eee;
}

.main-nav__item a {
  padding-left: 10px;
  height: 100%;
  width: 100%;
  position: absolute;
}

.main-nav__toggle-button, .main-nav__checkbox {
  position: fixed;
  top: 0px;
  left: 0px;
  height: 60px;
  width: 60px;
  z-index: 101;
  background: rgba(0,0,0,0.0);
  border: none;
}

.main-nav__toggle-button--label {
  cursor: pointer;
  display: none;
}

.main-nav__toggle-button--real-button {
  display: none;
}

.main-nav__toggle-button {
  padding: 6px;
}

.main-nav__checkbox {
  padding: 0px;
  margin: 0px;
  opacity: 0;
  cursor: pointer;
}

.main-nav.upgraded .main-nav__checkbox {
  display: none;
}

.main-nav__item a:hover,.main-nav__item a:focus {
  background-color: #eee;
}

.main-nav__footer {
  display: flex;
  font-size: 0.8em;
  line-height: 1.5em;
  padding: 10px;
  flex-grow: 1;
  flex-direction: column;
  justify-content: flex-end;
}

@media only screen and (max-width: 1120px) {
  .main-nav__contents {
    transform: none;
    left: -300px;
  }
  .main-nav.upgraded .main-nav__contents {
    transform: translateX(300px);
  }
  .main-nav-collapsed .main-nav.upgraded .main-nav__contents {
    transform: none;
  }
  main-nav:not(.upgraded) #js-main-nav__checkbox:checked ~ .main-nav__contents {
    transform: translateX(300px);
  }
  main-nav .main-nav__contents {
    will-change: transform;
    z-index: 100;
    top: 0px;
  }
  .main-nav__header {
    height: 60px;
  }
  .main-nav__toggle-button--label {
    display: block;
  }
  .main-nav.upgraded .main-nav__toggle-button--label {
    display: none;
  }
  .main-nav.upgraded .main-nav__toggle-button--real-button {
    display: block;
  }
  .main-nav:not(.upgradeable) {
    /*position: relative;
    width: auto;
    top: 0px;*/
  }
}