.sidebar {
    position: fixed; top: 0; left: 0;
    width: 80px; height: 100vh;
    background: #111; z-index: 1030;
}
.sidebar .logo img { width: 60px; }
.hamburger { cursor: pointer; }
.hamburger span {
    display: block; width: 25px; height: 3px;
    background: #fff; margin: 5px auto;
}


.overlay {
    position: fixed;
    top: 0;
    left: 80px;
    width: calc(100vw - 80px);
    height: 100vh;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.6s ease, visibility 0.6s ease;
    z-index: 1020;
    }

.overlay.open { opacity: 1; visibility: visible; }
.overlay nav a {
  display: block;
  font-size: 4rem; font-weight: 900; color: #fff;
  text-transform: uppercase;
  margin: .5rem 0;
  letter-spacing: 0;
  text-decoration: none;
}



@media (max-width: 768px) {

.overlay {
    left: 0 !important;;
    width: 100% !important;;
}

.overlay nav a {
    font-size: 1.4rem;
    margin: 1.5rem
}


  .sidebar  {
    position: fixed !important;
    top: 0;
    left: 0;
    width: 100%;
    height: 70px!important;
    z-index: 9999999 !important;
    background: black;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-direction: row !important;
  }

  .logo {
    height: 32px;
  }



  #mainNav {
    display: none;
}


}