CSS导航菜单悬停效果

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css

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html

css

*, *:before, *:after {
  box-sizing: border-box;
  transition: all 200ms ease;
}

body {
  background: black;
  font-family: "Source Sans Pro", sans-serif;
}

nav {
  border: 2px solid white;
  display: table;
  table-layout: fixed;
  margin: 40vh auto;
  width: 80%;
  text-align: center;
  position: relative;
  overflow: hidden;
}
nav a {
  display: table-cell;
  width: 1%;
  padding: 1rem;
  color: white;
  text-transform: uppercase;
  text-decoration: none;
  letter-spacing: 1px;
}
nav a:last-child:nth-child(1):before {
  width: 100%;
}
nav a:nth-child(1):nth-last-child(1):hover ~ :last-child:before, nav a:nth-child(1):nth-last-child(1):last-child:hover:before {
  left: 0%;
}
nav a:nth-child(1):nth-last-child(1):last-child:before {
  left: -100%;
}
nav a:last-child:nth-child(2):before {
  width: 50%;
}
nav a:nth-child(1):nth-last-child(2):hover ~ :last-child:before, nav a:nth-child(1):nth-last-child(2):last-child:hover:before {
  left: 0%;
}
nav a:nth-child(1):nth-last-child(2):last-child:before {
  left: -50%;
}
nav a:nth-child(2):nth-last-child(1):hover ~ :last-child:before, nav a:nth-child(2):nth-last-child(1):last-child:hover:before {
  left: 50%;
}
nav a:nth-child(2):nth-last-child(1):last-child:before {
  left: -50%;
}
nav a:last-child:nth-child(3):before {
  width: 33.3333333333%;
}
nav a:nth-child(1):nth-last-child(3):hover ~ :last-child:before, nav a:nth-child(1):nth-last-child(3):last-child:hover:before {
  left: 0%;
}
nav a:nth-child(1):nth-last-child(3):last-child:before {
  left: -33.3333333333%;
}
nav a:nth-child(2):nth-last-child(2):hover ~ :last-child:before, nav a:nth-child(2):nth-last-child(2):last-child:hover:before {
  left: 33.3333333333%;
}
nav a:nth-child(2):nth-last-child(2):last-child:before {
  left: -33.3333333333%;
}
nav a:nth-child(3):nth-last-child(1):hover ~ :last-child:before, nav a:nth-child(3):nth-last-child(1):last-child:hover:before {
  left: 66.6666666667%;
}
nav a:nth-child(3):nth-last-child(1):last-child:before {
  left: -33.3333333333%;
}
nav a:last-child:nth-child(4):before {
  width: 25%;
}
nav a:nth-child(1):nth-last-child(4):hover ~ :last-child:before, nav a:nth-child(1):nth-last-child(4):last-child:hover:before {
  left: 0%;
}
nav a:nth-child(1):nth-last-child(4):last-child:before {
  left: -25%;
}
nav a:nth-child(2):nth-last-child(3):hover ~ :last-child:before, nav a:nth-child(2):nth-last-child(3):last-child:hover:before {
  left: 25%;
}
nav a:nth-child(2):nth-last-child(3):last-child:before {
  left: -25%;
}
nav a:nth-child(3):nth-last-child(2):hover ~ :last-child:before, nav a:nth-child(3):nth-last-child(2):last-child:hover:before {
  left: 50%;
}
nav a:nth-child(3):nth-last-child(2):last-child:before {
  left: -25%;
}
nav a:nth-child(4):nth-last-child(1):hover ~ :last-child:before, nav a:nth-child(4):nth-last-child(1):last-child:hover:before {
  left: 75%;
}
nav a:nth-child(4):nth-last-child(1):last-child:before {
  left: -25%;
}
nav a:last-child:nth-child(5):before {
  width: 20%;
}
nav a:nth-child(1):nth-last-child(5):hover ~ :last-child:before, nav a:nth-child(1):nth-last-child(5):last-child:hover:before {
  left: 0%;
}
nav a:nth-child(1):nth-last-child(5):last-child:before {
  left: -20%;
}
nav a:nth-child(2):nth-last-child(4):hover ~ :last-child:before, nav a:nth-child(2):nth-last-child(4):last-child:hover:before {
  left: 20%;
}
nav a:nth-child(2):nth-last-child(4):last-child:before {
  left: -20%;
}
nav a:nth-child(3):nth-last-child(3):hover ~ :last-child:before, nav a:nth-child(3):nth-last-child(3):last-child:hover:before {
  left: 40%;
}
nav a:nth-child(3):nth-last-child(3):last-child:before {
  left: -20%;
}
nav a:nth-child(4):nth-last-child(2):hover ~ :last-child:before, nav a:nth-child(4):nth-last-child(2):last-child:hover:before {
  left: 60%;
}
nav a:nth-child(4):nth-last-child(2):last-child:before {
  left: -20%;
}
nav a:nth-child(5):nth-last-child(1):hover ~ :last-child:before, nav a:nth-child(5):nth-last-child(1):last-child:hover:before {
  left: 80%;
}
nav a:nth-child(5):nth-last-child(1):last-child:before {
  left: -20%;
}
nav a:hover {
  color: black;
}
nav a:last-child:before {
  content: "";
  display: block;
  position: absolute;
  top: 0;
  background: white;
  height: 100%;
  z-index: -1;
}

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