.menu-trigger, .menu-trigger span {
  display: inline-block;
  transition: all .4s;
  box-sizing: border-box;
}

.menu-trigger {
  position: relative;
  width: 24px;
  height: 24px;
  background: none;
  border: none;
  appearance: none;
  cursor: pointer;
}

.menu-trigger span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: #2cada1;
  border-radius: 4px;
}

.menu-trigger span:nth-of-type(1) {
  top: 0;
}

.menu-trigger span:nth-of-type(2) {
  top: 11px;
}

.menu-trigger span:nth-of-type(3) {
  bottom: 0;
}

.menu-trigger span:nth-of-type(1) {
  animation: menu-bar01 .75s forwards;
}

@keyframes menu-bar01 {
  0% {
    transform: translateY(10px) rotate(45deg);
  }
  50% {
    transform: translateY(10px) rotate(0);
  }
  100% {
    transform: translateY(0) rotate(0);
  }
}

.menu-trigger span:nth-of-type(2) {
  transition: all .25s .25s;
  opacity: 1;
}

.menu-trigger span:nth-of-type(3) {
  animation: menu-bar02 .75s forwards;
}

@keyframes menu-bar02 {
  0% {
    transform: translateY(-10px) rotate(-45deg);
  }
  50% {
    transform: translateY(-10px) rotate(0);
  }
  100% {
    transform: translateY(0) rotate(0);
  }
}

.menu-trigger.active span:nth-of-type(1) {
  animation: active-menu-bar01 .75s forwards;
}

@keyframes active-menu-bar01 {
  0% {
    transform: translateY(0) rotate(0);
  }
  50% {
    transform: translateY(10px) rotate(0);
  }
  100% {
    transform: translateY(11px) rotate(45deg);
  }
}

.menu-trigger.active span:nth-of-type(2) {
  opacity: 0;
}

.menu-trigger.active span:nth-of-type(3) {
  animation: active-menu-bar03 .75s forwards;
}

@keyframes active-menu-bar03 {
  0% {
    transform: translateY(0) rotate(0);
  }
  50% {
    transform: translateY(-10px) rotate(0);
  }
  100% {
    transform: translateY(-11px) rotate(-45deg);
  }