style.css

body {
  margin: 0;
  padding: 0;
  background-color: #34495e;
}

h1 {
  text-align: center;
  background-color: #f1c40f;
  margin: 0;
  padding: 20px;
}

nav#nav1, nav#nav2, nav#nav3 {
  margin: 50px auto auto;
  text-align: center;
}

nav#nav1 .title, nav#nav2 .title, nav#nav3 .title {
  background-color: #ecf0f1;
  color: black;
  display: inline-block;
  margin: 0;
  padding: 10px;
  -webkit-box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
          box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

nav#nav1 .menu, nav#nav2 .menu, nav#nav3 .menu {
  margin: 20px 0 0;
  list-style-type: none;
}

nav#nav1 li, nav#nav2 li, nav#nav3 li {
  position: relative;
  display: inline-block;
  padding: 10px 20px;
  cursor: pointer;
}

nav#nav1 li:hover span, nav#nav2 li:hover span, nav#nav3 li:hover span {
  height: 100%;
}

nav#nav1 li:hover a, nav#nav2 li:hover a, nav#nav3 li:hover a {
  color: white;
}

nav#nav1 li span, nav#nav2 li span, nav#nav3 li span {
  position: absolute;
  top: 0;
  left: 0;
  width: 25%;
  height: 0;
  background-color: black;
  -webkit-transition: all 0.1s linear;
  transition: all 0.1s linear;
  z-index: -1;
}

nav#nav1 li span:nth-child(2), nav#nav2 li span:nth-child(2), nav#nav3 li span:nth-child(2) {
  left: 25%;
  -webkit-transition-delay: 0.1s;
          transition-delay: 0.1s;
}

nav#nav1 li span:nth-child(3), nav#nav2 li span:nth-child(3), nav#nav3 li span:nth-child(3) {
  left: 50%;
  -webkit-transition-delay: 0.2s;
          transition-delay: 0.2s;
}

nav#nav1 li span:nth-child(4), nav#nav2 li span:nth-child(4), nav#nav3 li span:nth-child(4) {
  left: 75%;
  -webkit-transition-delay: 0.3s;
          transition-delay: 0.3s;
}

nav#nav1 a, nav#nav2 a, nav#nav3 a {
  color: white;
  text-decoration: none;
}

/*This navigation 2 changes*/
nav#nav2 li span {
  -webkit-transition-delay: 0.4s;
          transition-delay: 0.4s;
}

nav#nav2 li span:nth-child(2) {
  left: 25%;
  -webkit-transition-delay: 0.3s;
          transition-delay: 0.3s;
}

nav#nav2 li span:nth-child(3) {
  left: 50%;
  -webkit-transition-delay: 0.2s;
          transition-delay: 0.2s;
}

nav#nav2 li span:nth-child(4) {
  left: 75%;
  -webkit-transition-delay: 0.1s;
          transition-delay: 0.1s;
}

/*This navigation 3 changes*/
nav#nav3 li:hover span {
  width: 100%;
  height: 25%;
}

nav#nav3 li span {
  left: 0;
  width: 0;
  height: 25%;
}

nav#nav3 li span:nth-child(2) {
  top: 25%;
  left: 0;
}

nav#nav3 li span:nth-child(3) {
  top: 50%;
  left: 0;
}

nav#nav3 li span:nth-child(4) {
  top: 75%;
  left: 0;
}

/*This navigation 4 changes*/
nav#nav4 {
  text-align: center;
  margin: 50px auto 50px auto;
}

nav#nav4 .title {
  background-color: #ecf0f1;
  color: black;
  display: inline-block;
  margin: 0;
  padding: 10px;
  -webkit-box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
          box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

nav#nav4 .menu {
  list-style-type: none;
}

nav#nav4 li {
  position: relative;
  padding: 10px 20px;
  display: inline-block;
  cursor: pointer;
}

nav#nav4 li:hover span {
  width: 100%;
}

nav#nav4 li a {
  color: white;
  text-decoration: none;
}

nav#nav4 li span {
  position: absolute;
  top: 0;
  right: 0;
  width: 0;
  height: 25%;
  background-color: black;
  -webkit-transition: width 0.2s;
  transition: width 0.2s;
  z-index: -1;
}

nav#nav4 li span:nth-child(2) {
  top: 25%;
  right: 0;
  -webkit-transition-delay: 0.1s;
          transition-delay: 0.1s;
}

nav#nav4 li span:nth-child(3) {
  top: 50%;
  right: 0;
  -webkit-transition-delay: 0.2s;
          transition-delay: 0.2s;
}

nav#nav4 li span:nth-child(4) {
  top: 75%;
  right: 0;
  -webkit-transition-delay: 0.3s;
          transition-delay: 0.3s;
}
/*# sourceMappingURL=style.css.map */