/* header */

header ul {
  overflow: hidden;
}

header li a {
  display: block;
  text-decoration: none;
}

header li a:hover,
header .menu-btn:hover {
  background-color: #1a1b1b;
  color: white;
}


/* menu */

header .menu {
  max-height: 0;
  transition: max-height .2s ease-out;
}

/* menu icon */

header .menu-icon {
  cursor: pointer;
  padding: 1.5rem 1.25rem;
  position: relative;
  user-select: none;
}

header .menu-icon .nav-icon {
  background: #333;
  display: block;
  height: 2px;
  position: relative;
  transition: background .2s ease-out;
  width: 1rem;
}

header .menu-icon .nav-icon:before,
header .menu-icon .nav-icon:after {
  background: #333;
  content: '';
  display: block;
  height: 100%;
  position: absolute;
  transition: all .2s ease-out;
  width: 100%;
}

header .menu-icon .nav-icon:before {
  top: 5px;
}

header .menu-icon .nav-icon:after {
  top: -5px;
}

/* menu btn */

header .menu-btn {
  display: none;
}

header .menu-btn:checked ~ .menu {
  max-height: 15rem;
  margin-top: 1rem;
}

header .menu-btn:checked ~ .menu-icon .nav-icon {
  background: transparent;
}

header .menu-btn:checked ~ .menu-icon .nav-icon:before {
  transform: rotate(-45deg);
  top:0;
}

header .menu-btn:checked ~ .menu-icon .nav-icon:after {
  transform: rotate(45deg);
  top:0;
}