#navbtn {
	width: 63px;
	height: 64px;
}

.mtoggle {
  position: relative;
  z-index: 10;
  height: 0px;
  top: 10px;
  left: -10px;
  transition: height 0.4s ease-in;
  overflow: hidden;
}

input[type="checkbox"] {
  display: none;
}

input[type="checkbox"]:checked ~ .mtoggle {
  height: 130px;
}

input[type="checkbox"]:checked ~ label .top {
  -webkit-transform: translateY(0px) rotateZ(45deg);
  -moz-transform: translateY(0px) rotateZ(45deg);
  -ms-transform: translateY(0px) rotateZ(45deg);
  -o-transform: translateY(0px) rotateZ(45deg);
  transform: translateY(0px) rotateZ(45deg);
}

input[type="checkbox"]:checked ~ label .bottom {
  -webkit-transform: translateY(-15px) rotateZ(-45deg);
  -moz-transform: translateY(-15px) rotateZ(-45deg);
  -ms-transform: translateY(-15px) rotateZ(-45deg);
  -o-transform: translateY(-15px) rotateZ(-45deg);
  transform: translateY(-15px) rotateZ(-45deg);
}

input[type="checkbox"]:checked ~ label .middle {
  width: 0;
}

.middle {
  margin: 0 auto;
}

label {
  display: inline-block;
  padding: 7px 10px;
  background-color: transparent;
  cursor: pointer;
  margin: 10px;
  z-index: 3;
  position: relative;
}

.bar {
  display: block;
  background-color: #000;
  width: 30px;
  height: 3px;
  border-radius: 5px;
  margin: 5px auto;
  transition: background-color 0.4s ease-in, transform 0.4s ease-in,
    width 0.4s ease-in;
}

.button {
  display: inline-block;
  background-image: none;
  border: none;
  background-color: transparent;
  padding-bottom: 7px;
  position: relative;
  cursor: pointer;
  font-size: 20px;
  color: white;
  padding: 7px 50px;
  border: 2px solid white;
}

@media (min-width: 768px) {
  #navbtn {
    display: none;
  }
}