@media (max-width: 767px) {
  .collapse-menu * {
    box-sizing: border-box;
  }
  .collapse-menu {
    position: fixed;
    left: 0;
    z-index: 2000;
  }
  .collapse-menu .container {
    padding: 0;
  }
  .collapse-menu .checkbox-toggle {
    z-index: 2;
    cursor: pointer;
    opacity: 0;
    display: initial;
  }
  .collapse-menu .checkbox-toggle,
  .collapse-menu .hamburger {
    position: absolute;
    top: 16px;
    right: 0;
    width: 50px;
    height: 44px;
  }
  .collapse-menu .checkbox-toggle:checked + .hamburger > div {
    -webkit-transform: rotate(135deg);
    transform: rotate(135deg);
  }
  .collapse-menu .checkbox-toggle:checked + .hamburger > div:before,
  .collapse-menu .checkbox-toggle:checked + .hamburger > div:after {
    top: 0;
    -webkit-transform: rotate(90deg);
    transform: rotate(90deg);
  }
  .collapse-menu .checkbox-toggle:checked + .hamburger > div:after {
    opacity: 0;
  }
  .collapse-menu .checkbox-toggle:checked ~ .menu {
    pointer-events: auto;
    visibility: visible;
  }
  .collapse-menu .checkbox-toggle:checked ~ .menu > div {
    -webkit-transform: scale(1);
    transform: scale(1);
    transition-duration: 0.75s;
  }
  .collapse-menu .checkbox-toggle:checked ~ .menu > div > div {
    opacity: 1;
    transition: opacity 0.4s ease 0.4s;
  }
  .collapse-menu .checkbox-toggle:hover + .hamburger {
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.1);
  }
  .collapse-menu .checkbox-toggle:checked:hover + .hamburger > div {
    -webkit-transform: rotate(225deg);
    transform: rotate(225deg);
  }
  .collapse-menu .hamburger {
    z-index: 1;
    padding: 0.5em 1.2em;
    background: rgba(0, 0, 0, 0.15);
    border-radius: 0.3em 0 0 0.3em;
    cursor: pointer;
    transition: box-shadow 0.4s ease;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .collapse-menu .checkbox-toggle:checked + .hamburger {
    padding: 0.5em 1em;
  }
  .collapse-menu .checkbox-toggle:hover + .hamburger {
    background: rgba(0, 0, 0, 0.75);
  }
  .collapse-menu .hamburger > div {
    position: relative;
    flex: none;
    width: 100%;
    height: 2px;
    background: #fefefe;
    transition: all 0.4s ease;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .collapse-menu .hamburger > div:before,
  .collapse-menu .hamburger > div:after {
    content: '';
    position: absolute;
    z-index: 1;
    top: -8px;
    left: -20%;
    width: 140%;
    height: 2px;
    background: inherit;
    transition: all 0.4s ease;
  }
  .collapse-menu .checkbox-toggle:checked + .hamburger > div:before,
  .collapse-menu .checkbox-toggle:checked + .hamburger > div:after {
    left: 0;
    width: 100%;
  }
  .collapse-menu .hamburger > div:after {
    top: 8px;
  }
  .collapse-menu .menu {
    position: fixed;
    top: -2px;
    left: 0;
    width: 100%;
    height: 105%;
    pointer-events: none;
    visibility: hidden;
    overflow: hidden;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    outline: 1px solid transparent;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .collapse-menu .menu > div {
    width: 250vw;
    height: 250vw;
    color: #fefefe;
    background: rgba(21, 84, 161, 0.97);
    border-radius: 50%;
    transition: all 0.4s ease;
    flex: none;
    -webkit-transform: scale(0);
    transform: scale(0);
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .collapse-menu .menu > div > div {
    text-align: center;
    max-width: 90vw;
    max-height: 100vh;
    opacity: 0;
    transition: opacity 0.4s ease;
    overflow-y: auto;
    flex: none;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .collapse-menu .menu > div > div > ul {
    list-style: none;
    padding: 0 1em;
    margin: 0;
    display: block;
    max-height: 100vh;
  }
  .collapse-menu .menu > div > div > ul > li {
    padding: 0;
    margin: 1em;
    font-size: 24px;
    display: block;
  }
  .collapse-menu .menu > div > div > ul > li > a {
    position: relative;
    display: inline;
    cursor: pointer;
    transition: color 0.4s ease;
  }
  .collapse-menu .menu > div > div > ul > li > a:hover {
    color: #e5e5e5;
  }
  .collapse-menu .menu > div > div > ul > li > a:hover:after {
    width: 100%;
  }
  .collapse-menu .menu > div > div > ul > li > a:after {
    content: '';
    position: absolute;
    z-index: 1;
    bottom: -0.15em;
    left: 0;
    width: 0;
    height: 2px;
    background: #e5e5e5;
    transition: width 0.4s ease;
  }
  .navbar-fixed-top .navbar-collapse {
    max-height: initial;
    margin: 0;
  }
}