.menu-container
  input(type="checkbox" id="menu")
  label(for="menu")
    .menu
  .box
    h1 Explore
    h1 Connect
    h1 Interact
    .move-item

$primary: #333;
@import url('https://fonts.googleapis.com/css?family=Montserrat');

@mixin psuedo {
  content: '';
  position: absolute;
  background: $primary;
  width: 55px;
  height: 3px;
  transition: .5s;
  transition-delay: .2s;
}

$colors: (
  1: #DEF06C,
  2: #71C1D1,
  3: #DD7171
);

body {
  background: #ddd;
  overflow: hidden;
  font-family: 'Montserrat', sans-serif;
}

.menu-container {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  width: 100vw;
}

label {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 50px;
  width: 65px;
  cursor: pointer;
  transition: .5s;
  transition-delay: .7s;
}

#menu {
  display: none;
}

#menu:checked ~ label {
  transform: translateY(-100px);
}

.menu {
  position: relative;
  width: 55px;
  height: 3px;
  background: $primary;
}

.menu:after, .menu:before {
  @include psuedo;
}

.menu:after {
  top: -10px;
}

.menu:before {
  top: 10px;
}

#menu:checked ~ label .menu:after {
  transform: translateY(10px);           opacity: 0;
}

#menu:checked ~ label .menu:before {
  transform: translateY(-10px);
  opacity: 0;
}

#menu:checked ~ label .menu {
  animation: move .5s ease forwards 1;
  animation-delay: .6s;
  @keyframes move {
    100% {
      transform: rotate(45deg);
    }
  }
}

#menu:checked ~ label .menu:before {
  animation: move1 .5s ease forwards 1;
  animation-delay: .6s;
  @keyframes move1 {
    0% {
      opacity: 1;
    }
    100% {
      transform: rotate(90deg) translateY(2px) translateX(-8px);
      opacity: 1;
      height: 3px;
    }
  }
}

.box {
  position: absolute;
  background: white;
  bottom: 0px;
  left: 0px;
  width: 100%;
  height: 300px;
  transition: .8s;
  transition-delay: .7s;
  overflow: hidden;
  transform: translateY(300px);
  display: flex;
  justify-content: center;
  align-items: center;
}

#menu:checked ~ .box {
  transform: translateY(0px);
}

h1 {
  position: relative;
  font-size: 40px;
  margin-right: 100px;
  cursor: pointer;
  &:last-child {
    margin-right: 0px;
  }
  &:first-child {
    margin-left: 115px;
  }
}

.move-item {
  position: absolute;
  height: 350px;
  width: 350px;
  background: #ddd;
  border-top-right-radius: 400px;
  border-bottom-right-radius: 125px;
  top: -270px;
  transition: .7s;
  transition-delay: .1s;
  transform: translateX(-250px) rotate(45deg);
  animation: ooz 3s linear infinite;
  @keyframes ooz {
    0% {
    }
    50% {
      border-bottom-left-radius: 300px;
      border-top-right-radius: 0px;
    }
  }
}

@for $x from 1 through 3 {
  h1:nth-child(#{$x}):after {
    position: absolute;
    content: '';
    bottom: 0px;
    left: 0px;
    width: 100%;
    height: 4px;
    background: map-get($colors, $x);
    }
}
h1:nth-child(1):hover ~ .move-item {
  transform: translate(-250px) rotate(45deg);
}

h1:nth-child(2):hover ~ .move-item {
  transform: translate(10px) rotate(45deg);
}

h1:nth-child(3):hover ~ .move-item {
  transform: translate(280px) rotate(45deg);
}