.menu {
  font-family: 'VenrynSans-Regular';
  letter-spacing: 3px;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}
a,
a:visited,
a:hover,
a:active {
  color: inherit;
  text-decoration: none;
}
.outer-menu {
  position: fixed;
  top: 45vh;
  left: 0;
  z-index: 1;
}
.outer-menu .checkbox-toggle {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 2;
  cursor: pointer;
  width: 60px;
  height: 60px;
  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: .75s;
}
.outer-menu .checkbox-toggle:checked ~ .menu > div > div {
  opacity: 1;
  transition: opacity 0.4s ease 0.4s;
}
.outer-menu .checkbox-toggle:hover + .hamburger {
  box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.1);
  background: #004EA1;
}
.outer-menu .checkbox-toggle:checked:hover + .hamburger > div {
  transform: rotate(225deg);
}
.outer-menu .hamburger {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
  width: 60px;
  height: 60px;
  padding: .5em 1em;
  background: rgba(13,62,68, 1);
  border-radius: 0.4em 0.4em 0.4em 0.4em;
  cursor: pointer;
  transition: box-shadow 0.4s ease;
  backface-visibility: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.outer-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;
}
.outer-menu .hamburger > div:before,
.outer-menu .hamburger > div:after {
  content: '';
  position: absolute;
  z-index: 1;
  top: -10px;
  left: 0;
  width: 100%;
  height: 2px;
  background: inherit;
  transition: all 0.4s ease;
}
.outer-menu .hamburger > div:after {
  top: 10px;
}
.outer-menu .menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  visibility: hidden;
  overflow: hidden;
  backface-visibility: hidden;
  outline: 1px solid transparent;
  display: flex;
  align-items: center;
  justify-content: center;
}
.outer-menu .menu > div {
  width: 200vw;
  height: 200vw;
  color: #fefefe;
  background: rgba(10,69,82, 0.95);
  border-radius: 50%;
  transition: all 0.4s ease;
  flex: none;
  transform: scale(0);
  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;
}
.outer-menu .menu > div > div > ul > li > a:hover {
  color: #e5e5e5;
}
.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: #e5e5e5;
  transition: width 0.4s ease;
}
 @media only screen and (max-device-width: 480px) {
.outer-menu .hamburger {
      width: 20px;
    height: 20px;
    padding: .5em 0.7em;
}
.outer-menu .menu > div > div > ul > li {
      font-size: 14px;
 }
 .outer-menu .checkbox-toggle {
    width: 40px;
    height: 35px;
    }
}