@import url('https://fonts.googleapis.com/css2?family=Poppins&display=swap');

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: #111;
}

section h1 {
  color: rgba(255, 255, 255, 0.1);
  font-size: 8vw;
}

.toggle {
  position: fixed;
  top: 40px;
  right: 40px;
  width: 50px;
  height: 50px;
  background: #fff url(menu.png);
  background-size: 30px;
  background-repeat: no-repeat;
  background-position: center;
  cursor: pointer;
  z-index: 10000;
}

.toggle.active {
  background: #fff url(close.png);
  background-size: 25px;
  background-repeat: no-repeat;
  background-position: center;
}

.navigation {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  visibility: hidden;
}

.navigation.active {
  visibility: visible;
}

.navigation span {
  position: absolute;
  top: -100%;
  left: calc(25% * var(--i));
  width: 25%;
  height: 100%;
  background: #de0611;
  border: 1px solid rgba(0, 0, 0, 0.25);
  transition: 0.25s;
  transition-delay: calc(0.25s * var(--i));
}

.navigation.active span {
  top: 0;
}

.navigation ul {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  z-index: 2;
  transform: translateX(-100px);
  opacity: 0;
  visibility: hidden;
  transition: 0.5s;
  transition-delay: 0s;
}

.navigation.active ul {
  transform: translateX(0px);
  opacity: 1;
  visibility: visible;
  transition-delay: 0.75s;
}

.navigation ul li {
  list-style: none;
}

.navigation ul li a {
  text-decoration: none;
  font-size: 3em;
  font-weight: bold;
  color: #fff;
  display: inline-block;
  padding: 5px 20px;
}

.navigation ul li a:hover {
  background: #fff;
  color: #de0611;
}

@media (max-width: 767px) {
  .navigation ul li a {
    font-size: 2em;
  }
}