* {
  margin: 0;
  padding: 0;
}

/* Icon 1 */

#nav-icon1, #nav-icon2, #nav-icon3, #nav-icon4 {
  width: 25px;
  height: 45px;
  position: relative;
  margin: 25px 17.5px;
  -ms-transform: rotate(0deg);
  -webkit-transform: rotate(0deg);
  -moz-transform: rotate(0deg);
  -o-transform: rotate(0deg);
  transform: rotate(0deg);
  -webkit-transition: .5s ease-in-out;
  -moz-transition: .5s ease-in-out;
  -o-transition: .5s ease-in-out;
  transition: .5s ease-in-out;
  cursor: pointer;
}

#nav-icon1 span, #nav-icon3 span, #nav-icon4 span {
  display: block;
  position: absolute;
  height: 2px;
  width: 100%;
  background: #000000;
  opacity: 1;
  left: 0;
  -webkit-transform: rotate(0deg);
  -moz-transform: rotate(0deg);
  -o-transform: rotate(0deg);
  transform: rotate(0deg);
  -webkit-transition: .25s ease-in-out;
  -moz-transition: .25s ease-in-out;
  -o-transition: .25s ease-in-out;
  transition: .25s ease-in-out;
}


/* Icon 4 */
#hamburger-ico {
    color: red;
    width: 100%;
    height: 50%;
    z-index: 50;
}

#nav-icon4 {
    background-image: url("./Hamburger_icon.png");
}

#nav-icon4 span:nth-child(1) {
  top: 0px;
  -webkit-transform-origin: left center;
  -moz-transform-origin: left center;
  -o-transform-origin: left center;
  transform-origin: left center;
}

#nav-icon4 span:nth-child(2) {
  top: 7px;
  -webkit-transform-origin: left center;
  -moz-transform-origin: left center;
  -o-transform-origin: left center;
  transform-origin: left center;
}

#nav-icon4 span:nth-child(3) {
  top: 14px;
  -webkit-transform-origin: left center;
  -moz-transform-origin: left center;
  -o-transform-origin: left center;
  transform-origin: left center;
}

#nav-icon4.open span:nth-child(1) {
  -webkit-transform: rotate(45deg);
  -moz-transform: rotate(45deg);
  -o-transform: rotate(45deg);
  transform: rotate(45deg);
  top: 0px;
  left: 5px;
}

#nav-icon4.open span:nth-child(2) {
  width: 0%;
  opacity: 0;
}

#nav-icon4.open span:nth-child(3) {
  -webkit-transform: rotate(-45deg);
  -moz-transform: rotate(-45deg);
  -o-transform: rotate(-45deg);
  transform: rotate(-45deg);
  top: 18px;
  left: 5px;
}