.outer-menu {
    top: -90px;
    right: 90px;
    z-index: 1;
    float: right;
}
.outer-menu .checkbox-toggle {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 2;
  cursor: pointer;
  width: 90px;
  height: 90px;
  opacity: 0;
}
.outer-menu .checkbox-toggle:checked + .hamburger > div {
  transform: rotate(135deg);
}
.outer-menu .checkbox-toggle:checked + .hamburger > div:before,
.outer-menu .checkbox-toggle:checked + .hamburger > div:after {
  top: 0;
  transform: rotate(90deg);
}
.outer-menu .checkbox-toggle:checked + .hamburger > div:after {
  opacity: 0;
}
.outer-menu .checkbox-toggle:checked ~ .menu {
  pointer-events: auto;
  visibility: visible;
}
.outer-menu .checkbox-toggle:checked ~ .menu > div {
  transform: scale(1);
  transition-duration: 0.75s;
}
.outer-menu .checkbox-toggle:checked ~ .menu > div > div {
  opacity: 1;
  transition: opacity 0.4s ease 0.4s;
}
.outer-menu .checkbox-toggle:checked:hover + .hamburger > div {
  transform: rotate(225deg);
}
.outer-menu .hamburger {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
  width: 90px;
  height: 90px;
  padding: 0.5em 1em;
  border-radius: 0 0.12em 0.12em 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.outer-menu .hamburger > div {
  position: relative;
  flex: none;
  width: 100%;
  height: 3px;
  background: #FEFEFE;
  transition: all 0.4s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}
.outer-menu .hamburger > div:before,
.outer-menu .hamburger > div:after {
  content: '';
  position: absolute;
  z-index: 1;
  top: -20px;
  left: 0;
  width: 100%;
  height: 3px;
  background: inherit;
  transition: all 0.4s ease;
}
.outer-menu .hamburger > div:after {
  top: 20px;
}
.outer-menu .menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  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;
}
.outer-menu .menu > div {
  width: 400vw;
  height: 400vw;
  color: #FEFEFE;
  background: #a512cff0;
  border-radius: 50%;
  transition: all 0.4s ease;
  flex: none;
  transform: scale(0);
  -webkit-backface-visibility: hidden;
          backface-visibility: hidden;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.outer-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;
}
.outer-menu .menu > div > div > ul {
  list-style: none;
  padding: 0 1em;
  margin: 0;
  display: block;
  max-height: 100vh;
}
.outer-menu .menu > div > div > ul > li {
  padding: 0;
  margin: 1em;
  font-size: 24px;
  display: block;
}
.outer-menu .menu > div > div > ul > li > a {
  position: relative;
  display: inline;
  cursor: pointer;
  transition: color 0.4s ease;
  font-family: 'Amatic SC';
  font-weight: 700;
  font-size: 50px;
}
.outer-menu .menu > div > div > ul > li > a:hover {
  color: #58efff;
}
.outer-menu .menu > div > div > ul > li > a:hover:after {
  width: 100%;
}
.outer-menu .menu > div > div > ul > li > a:after {
  content: '';
  position: absolute;
  z-index: 1;
  bottom: -0.15em;
  left: 0;
  width: 0;
  height: 2px;
  background: #fbff4a;
  transition: width 0.4s ease;
}