body{
  padding: 0;
  margin: 0;
  background:#3F51B5;
  background-image: linear-gradient(#7E57C2 50%, #3F51B5);
  text-align: center;
  background-size: 100% 100%;
  background-repeat: no-repeat;
  height:100vh;
}
h1{
  color:#fff;
  font-family: 'Lato';
  font-weight:100;
  padding:30px;
  display:block;
}
.wrapper{
  position:absolute;
  top:48%;
  left:50%;
  transform:translate(-50%, -20%);
}
.wrapper .icon{
  margin:20px;
}
/* nav-icon-1 */
.nav-icon-1{
  width: 30px;
  height: 30px;
  position: relative;
  transition: .1s;
  margin: 10px 10px;
  cursor: pointer;
  display: inline-block;
}
.nav-icon-1 span{
  width: 5px;
  height: 5px;
  background-color: #fff;
  display: block;
  border-radius: 50%;
  position: absolute;

}
.nav-icon-1:hover span{
  transform: scale(1.2);
  transition: 350ms cubic-bezier(.8, .5, .2, 1.4);
}
.nav-icon-1 span:nth-child(1){
  left: 0;
  top: 0;
}
.nav-icon-1 span:nth-child(2){
  left: 12px;
  top: 0;
}
.nav-icon-1 span:nth-child(3){
  right: 0;
  top: 0;
}
.nav-icon-1 span:nth-child(4){
  left: 0;
  top: 12px;
}
.nav-icon-1 span:nth-child(5){
  position: absolute;
  left: 12px;
  top: 12px;
}
.nav-icon-1 span:nth-child(6){
  right: 0px;
  top: 12px;
}
.nav-icon-1 span:nth-child(7){
  left: 0px;
  bottom: 0px;
}
.nav-icon-1 span:nth-child(8){
  position: absolute;
  left: 12px;
  bottom: 0px;
}
.nav-icon-1 span:nth-child(9){
  right: 0px;
  bottom: 0px;
}
.nav-icon-1.open{
  transform: rotate(180deg);
  cursor: pointer;
  transition: .2s cubic-bezier(.8, .5, .2, 1.4);
}
.nav-icon-1.open span{
  border-radius: 50%;
  transition-delay: 200ms;
  transition: .5s cubic-bezier(.8, .5, .2, 1.4);
}
.nav-icon-1.open span:nth-child(2) {
  left: 6px;
  top: 6px;
}
.nav-icon-1.open span:nth-child(4) {
  left: 6px;
  top: 18px;
}
.nav-icon-1.open span:nth-child(6) {
  right: 6px;
  top: 6px;
}
.nav-icon-1.open span:nth-child(8) {
  left: 18px;
  bottom: 6px;
}
/* nav-icon-2 */
.nav-icon-2{
  width: 35px;
  height: 30px;
  margin: 10px 10px;
  position: relative;
  cursor: pointer;
  display: inline-block;
}
.nav-icon-2 span{
  background-color:#FFF;
  position: absolute;
  border-radius: 2px;
  transition: .3s cubic-bezier(.8, .5, .2, 1.4);
}
.nav-icon-2 span:nth-child(1){
  width: 100%;
  height:  4px;
  display: block;
  top: 0px;
  left: 0px;
}
.nav-icon-2 span:nth-child(2){
  width: 100%;
  height:  4px;
  display: block;
  top: 13px;
  left: 0px;
}
.nav-icon-2 span:nth-child(3){
  width: 100%;
  height:  4px;
  display: block;
  bottom: 0px;
  left: 0px;
}
.nav-icon-2:not(.open):hover span:nth-child(1){
  width: 100%;
  height:  4px;
  display: block;
  top: -2px;
  left: 0px;
  transition: .3s cubic-bezier(.8, .5, .2, 1.4);
}
.nav-icon-2:not(.open):hover span:nth-child(2){
  width: 100%;
  height:  4px;
  display: block;
  top: 13px;
  left: 0px;
  transition: .4s cubic-bezier(.8, .5, .2, 1.4);
}
.nav-icon-2:not(.open):hover span:nth-child(3){
  width: 100%;
  height:  4px;
  display: block;
  bottom: -2px;
  left: 0px;
  transition: .3s cubic-bezier(.8, .5, .2, 1.4);
}
.nav-icon-2.open span:nth-child(1){
  left:3px;
  top: 12px;
  width: 30px;
  transition: .3s cubic-bezier(.8, .5, .2, 1.4);
  transform: rotate(90deg);
  transition-delay: 150ms;
}
.nav-icon-2.open span:nth-child(2){
  left:2px;
  top: 20px;
  width: 20px;
  transition: .3s cubic-bezier(.8, .5, .2, 1.4);
  transform: rotate(45deg);
  transition-delay: 50ms;
}
.nav-icon-2.open span:nth-child(3){
  left:14px;
  top: 20px;
  width: 20px;
  transition: .3s cubic-bezier(.8, .5, .2, 1.4);
  transform: rotate(-45deg);
  transition-delay: 100ms;
}
/* nav-icon-3 */
.nav-icon-3{
  width: 35px;
  height: 30px;
  margin: 10px 10px;
  position: relative;
  cursor: pointer;
  display: inline-block;
}
.nav-icon-3 span{
  background-color:#FFF;
  position: absolute;
  border-radius: 2px;
  transition: .3s cubic-bezier(.8, .5, .2, 1.4);
}
.nav-icon-3 span:nth-child(1){
  width: 100%;
  height:  4px;
  display: block;
  top: 0px;
  left: 0px;
}
.nav-icon-3 span:nth-child(2){
  width: 100%;
  height:  4px;
  display: block;
  top: 13px;
  left: 0px;
}
.nav-icon-3 span:nth-child(3){
  width: 100%;
  height:  4px;
  display: block;
  bottom: 0px;
  left: 0px;
}
.nav-icon-3:not(.open):hover span:nth-child(1){
  width: 100%;
  height:  4px;
  display: block;
  top: -2px;
  left: 0px;
  transition: .3s cubic-bezier(.8, .5, .2, 1.4);
}
.nav-icon-3:not(.open):hover span:nth-child(2){
  width: 100%;
  height:  4px;
  display: block;
  top: 13px;
  left: 0px;
  transition: .4s cubic-bezier(.8, .5, .2, 1.4);
}
.nav-icon-3:not(.open):hover span:nth-child(3){
  width: 100%;
  height:  4px;
  display: block;
  bottom: -2px;
  left: 0px;
  transition: .3s cubic-bezier(.8, .5, .2, 1.4);
}
.nav-icon-3.open {
  transform: rotate(-90deg);
}
.nav-icon-3.open  span:nth-child(1){
  left:3px;
  top: 12px;
  width: 30px;
  transition: .3s cubic-bezier(.8, .5, .2, 1.4);
  transform: rotate(90deg);
  transition-delay: 150ms;
}
.nav-icon-3.open  span:nth-child(2){
  left:2px;
  top: 20px;
  width: 20px;
  transition: .3s cubic-bezier(.8, .5, .2, 1.4);
  transform: rotate(45deg);
  transition-delay: 50ms;
}
.nav-icon-3.open  span:nth-child(3){
  left:14px;
  top: 20px;
  width: 20px;
  transition: .3s cubic-bezier(.8, .5, .2, 1.4);
  transform: rotate(-45deg);
  transition-delay: 100ms;
}
/* nav-icon-4 */
.nav-icon-4{
  width: 35px;
  height: 30px;
  margin: 10px 10px;
  position: relative;
  cursor: pointer;
  display: inline-block;
}
.nav-icon-4 span{
  background-color:#FFF;
  position: absolute;
  border-radius: 2px;
  transition: .3s cubic-bezier(.8, .5, .2, 1.4);
}
.nav-icon-4 span:nth-child(1){
  width: 100%;
  height:  4px;
  display: block;
  top: 0px;
  left: 0px;
}
.nav-icon-4 span:nth-child(2){
  width: 100%;
  height:  4px;
  display: block;
  top: 13px;
  left: 0px;
}
.nav-icon-4 span:nth-child(3){
  width: 100%;
  height:  4px;
  display: block;
  bottom: 0px;
  left: 0px;
}
.nav-icon-4:not(.open):hover span:nth-child(1){
  width: 100%;
  height:  4px;
  display: block;
  top: -2px;
  left: 0px;
  transition: .3s cubic-bezier(.8, .5, .2, 1.4);
}
.nav-icon-4:not(.open):hover span:nth-child(2){
  width: 100%;
  height:  4px;
  display: block;
  top: 13px;
  left: 0px;
  transition: .4s cubic-bezier(.8, .5, .2, 1.4);
}
.nav-icon-4:not(.open):hover span:nth-child(3){
  width: 100%;
  height:  4px;
  display: block;
  bottom: -2px;
  left: 0px;
  transition: .3s cubic-bezier(.8, .5, .2, 1.4);
}
.nav-icon-4.open {
  transform: rotate(90deg);
}
.nav-icon-4.open span:nth-child(1){
  left:3px;
  top: 12px;
  width: 30px;
  transition: .3s cubic-bezier(.8, .5, .2, 1.4);
  transform: rotate(90deg);
  transition-delay: 150ms;
}
.nav-icon-4.open span:nth-child(2){
  left:2px;
  top: 20px;
  width: 20px;
  transition: .3s cubic-bezier(.8, .5, .2, 1.4);
  transform: rotate(45deg);
  transition-delay: 50ms;
}
.nav-icon-4.open span:nth-child(3){
  left:14px;
  top: 20px;
  width: 20px;
  transition: .3s cubic-bezier(.8, .5, .2, 1.4);
  transform: rotate(-45deg);
  transition-delay: 100ms;
}
/* nav-icon-5 */
.nav-icon-5{
  width: 35px;
  height: 30px;
  margin: 10px 10px;
  position: relative;
  cursor: pointer;
  display: inline-block;
}
.nav-icon-5 span{
  background-color:#fff;
  position: absolute;
  border-radius: 2px;
  transition: .3s cubic-bezier(.8, .5, .2, 1.4);
  width:100%;
  height: 4px;
  transition-duration: 500ms
}
.nav-icon-5 span:nth-child(1){
  top:0px;
  left: 0px;
}
.nav-icon-5 span:nth-child(2){
  top:13px;
  left: 0px;
  opacity:1;
}
.nav-icon-5 span:nth-child(3){
  bottom:0px;
  left: 0px;
}
.nav-icon-5:not(.open):hover span:nth-child(1){
  transform: rotate(-3deg) scaleY(1.1);
}
.nav-icon-5:not(.open):hover span:nth-child(2){
  transform: rotate(3deg) scaleY(1.1);
}
.nav-icon-5:not(.open):hover span:nth-child(3){
  transform: rotate(-4deg) scaleY(1.1);
}
.nav-icon-5.open span:nth-child(1){
  transform: rotate(45deg);
  top: 13px;
}
.nav-icon-5.open span:nth-child(2){
  opacity:0;
}
.nav-icon-5.open span:nth-child(3){
  transform: rotate(-45deg);
  top: 13px;
}
/* nav-icon-6 */
.nav-icon-6{
  width: 35px;
  height: 30px;
  margin: 10px 10px;
  position: relative;
  cursor: pointer;
  display: inline-block;
}
.nav-icon-6 span{
  background-color:#fff;
  position: absolute;
  border-radius: 2px;
  transition: .3s cubic-bezier(.8, .5, .2, 1.4);
  width:100%;
  height: 4px;
}
.nav-icon-6 span:nth-child(1){
  top:0px;
  left: 0px;
}
.nav-icon-6 span:nth-child(2){
  top:13px;
  left: 0px;
}
.nav-icon-6 span:nth-child(3){
  bottom:0px;
  left: 0px;
}
.nav-icon-6:not(.open):hover span:nth-child(1){
  transform:  scaleY(1.2);
  left: -5px;
}
.nav-icon-6:not(.open):hover span:nth-child(2){
  transform: rotate(5deg) scaleY(1.1);
}
.nav-icon-6:not(.open):hover span:nth-child(3){
  transform:  scaleY(1.2);
  left: 5px;
}
.nav-icon-6.open span:nth-child(1){
  transform: rotate(45deg) scaleX(0.7);
  top: 13PX;
  left: -8px;
}
.nav-icon-6.open span:nth-child(2){
  transform: scale(0);
  transition-duration: 50ms
}
.nav-icon-6.open span:nth-child(3){
  transform: rotate(-45deg) scaleX(0.7);
  top: 13PX;
  left: 7px;
}
/* nav-icon-7 */
.nav-icon-7{
  width: 35px;
  height: 30px;
  margin: 10px 10px;
  position: relative;
  cursor: pointer;
  display: inline-block;
}
.nav-icon-7 span{
  background-color:#FFF;
  position: absolute;
  border-radius: 2px;
  transition: .3s cubic-bezier(.8, .5, .2, 1.4);
  width:100%;
  height: 4px;
}
.nav-icon-7 span:nth-child(1){
  top:0px;
  left: 0px;
}
.nav-icon-7 span:nth-child(2){
  top:13px;
  left: 0px;
}
.nav-icon-7 span:nth-child(3){
  bottom:0px;
  left: 0px;
}
.nav-icon-7:not(.open):hover span:nth-child(1){
  transform: scaleX(.8);
}
.nav-icon-7:not(.open):hover span:nth-child(2){
  transform: scaleX(.5);
}
.nav-icon-7:not(.open):hover span:nth-child(3){
  transform: scaleX(.8);
}
.nav-icon-7.open span:nth-child(1){
  transform: rotate(90deg);
  top: 13PX;
}
.nav-icon-7.open span:nth-child(2){
  transform: scale(0);
  transition-duration: 50ms
}
.nav-icon-7.open span:nth-child(3){
  top: 13PX;
}
/* nav-icon-8 */
.nav-icon-8{
  width: 35px;
  height: 30px;
  margin: 10px 10px;
  position: relative;
  cursor: pointer;
  display: inline-block;
}
.nav-icon-8 span{
  background-color:#FFF;
  position: absolute;
  border-radius: 2px;
  transition: .3s cubic-bezier(.8, .5, .2, 1.4);
  width:100%;
  height: 4px;
}
.nav-icon-8 span:nth-child(1){
  top:0px;
  left: 0px;
}
.nav-icon-8 span:nth-child(2){
  top:13px;
  left: 0px;
}
.nav-icon-8 span:nth-child(3){
  bottom:0px;
  left: 0px;
}
.nav-icon-8:not(.open):hover span:nth-child(1){
  transform: scaleX(.8);
}
.nav-icon-8:not(.open):hover span:nth-child(2){
  transform: scaleX(.5);
}
.nav-icon-8:not(.open):hover span:nth-child(3){
  transform: scaleX(.8);
}
.nav-icon-8.open span:nth-child(1){
  top: 13px;
}
.nav-icon-8.open span:nth-child(2){
  top:13px;
}
.nav-icon-8.open span:nth-child(3){
  top: 13px;
}