.tb-nav {
    position: fixed;
    z-index: 100;
    top: 0;
    right: 0;
    bottom: 0;
    overflow: auto;
    height: 100vh;
    width: 100vw;
    transform: translateX(100%);
    will-change: transform;
    transition: .5s;
  }
  
  .tb-nav.open {
    transform: none;
  }
  
  .tb-nav__close {
    position: absolute;
    z-index: 11;
    top: 2rem;
    right: 2rem;
    width: 40px;
    height: 40px;
    cursor: pointer;
  }
  .tb-nav__close:before,
  .tb-nav__close:after {
    content: '';
    position: absolute;
    top: 50%;
    left: 20%;
    width: 60%;
    height: 2px;
    background-color: #aaa;
    transform: rotate(45deg);
    transition: .2s;
  }
  .tb-nav__close:after {
    transform: rotate(-45deg);
  }
  .tb-nav__close:hover:before,
  .tb-nav__close:hover:after {
    background-color: #ccc;
  }
  
  body.tb-nav-open {
    height: 100vh;
    overflow: hidden;
  }
  @media (min-width: 1025px) {
    .tb-nav {
      width: 55vw;
    }
  }
  @media (min-width: 1240px) {
    .tb-nav {
      width: 46vw;
    }
  }