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纯CSS菜单点击展开收起效果

2018-10-23 10:00:15 来源：纯CSS菜单点击展开收起效果 分类：CSS 阅读(1159) 评论(0) 作者：全栈工程师

完整代码如下： 

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>纯CSS菜单点击展开收起效果</title>
<style>
*, *:before, *:after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
}

body:before, body:after {
  content: "";
  display: block;
  height: 50%;
  background: #00bdea;
}
body:after {
  background: #208FF9;
}

/* MAIN VARIABLES FOR CUSTOMIZATION */
/* -------------------------------- */
.nav {
  overflow: hidden;
  position: absolute;
  left: 50%;
  top: 50%;
  width: auto;
  height: 90px;
  margin-top: -45px;
  background: #fff;
  border-radius: 5px;
  -webkit-transform: translate3d(-50%, 0, 0);
          transform: translate3d(-50%, 0, 0);
  box-shadow: 0 10px 35px rgba(0, 0, 0, 0.2);
}
.nav__cb {
  z-index: -1000;
  position: absolute;
  left: 0;
  top: 0;
  opacity: 0;
  pointer-events: none;
}
.nav__content {
  position: relative;
  width: 90px;
  height: 100%;
  -webkit-transition: width 1s cubic-bezier(0.49, -0.3, 0.68, 1.23);
  transition: width 1s cubic-bezier(0.49, -0.3, 0.68, 1.23);
}
.nav__cb:checked ~ .nav__content {
  -webkit-transition: width 1s cubic-bezier(0.48, 0.43, 0.29, 1.3);
  transition: width 1s cubic-bezier(0.48, 0.43, 0.29, 1.3);
  width: 410px;
}
.nav__items {
  position: relative;
  width: 410px;
  height: 100%;
  padding-left: 20px;
  padding-right: 110px;
  list-style-type: none;
  font-size: 0;
}
.nav__item {
  display: inline-block;
  vertical-align: top;
  width: 70px;
  text-align: center;
  color: #6C7784;
  font-size: 14px;
  line-height: 90px;
  font-family: Helvetica, Arial, sans-serif;
  font-weight: bold;
  -webkit-perspective: 1000px;
          perspective: 1000px;
  -webkit-transition: color 0.3s;
  transition: color 0.3s;
  cursor: pointer;
}
.nav__item:hover {
  color: #00bdea;
}
.nav__item-text {
  display: block;
  height: 100%;
  -webkit-transform: rotateY(-70deg);
          transform: rotateY(-70deg);
  opacity: 0;
  -webkit-transition: opacity 0.7s, -webkit-transform 0.7s cubic-bezier(0.48, 0.43, 0.7, 2.5);
  transition: opacity 0.7s, -webkit-transform 0.7s cubic-bezier(0.48, 0.43, 0.7, 2.5);
  transition: transform 0.7s cubic-bezier(0.48, 0.43, 0.7, 2.5), opacity 0.7s;
  transition: transform 0.7s cubic-bezier(0.48, 0.43, 0.7, 2.5), opacity 0.7s, -webkit-transform 0.7s cubic-bezier(0.48, 0.43, 0.7, 2.5);
}
.nav__cb:checked ~ .nav__content .nav__item-text {
  -webkit-transform: rotateY(0);
          transform: rotateY(0);
  opacity: 1;
  -webkit-transition: opacity 0.2s, -webkit-transform 0.7s cubic-bezier(0.48, 0.43, 0.7, 2.5);
  transition: opacity 0.2s, -webkit-transform 0.7s cubic-bezier(0.48, 0.43, 0.7, 2.5);
  transition: transform 0.7s cubic-bezier(0.48, 0.43, 0.7, 2.5), opacity 0.2s;
  transition: transform 0.7s cubic-bezier(0.48, 0.43, 0.7, 2.5), opacity 0.2s, -webkit-transform 0.7s cubic-bezier(0.48, 0.43, 0.7, 2.5);
}
.nav__item:nth-child(1) .nav__item-text {
  -webkit-transition-delay: 0.3s;
          transition-delay: 0.3s;
}
.nav__cb:checked ~ .nav__content .nav__item:nth-child(1) .nav__item-text {
  -webkit-transition-delay: 0s;
          transition-delay: 0s;
}
.nav__item:nth-child(2) .nav__item-text {
  -webkit-transition-delay: 0.2s;
          transition-delay: 0.2s;
}
.nav__cb:checked ~ .nav__content .nav__item:nth-child(2) .nav__item-text {
  -webkit-transition-delay: 0.1s;
          transition-delay: 0.1s;
}
.nav__item:nth-child(3) .nav__item-text {
  -webkit-transition-delay: 0.1s;
          transition-delay: 0.1s;
}
.nav__cb:checked ~ .nav__content .nav__item:nth-child(3) .nav__item-text {
  -webkit-transition-delay: 0.2s;
          transition-delay: 0.2s;
}
.nav__item:nth-child(4) .nav__item-text {
  -webkit-transition-delay: 0s;
          transition-delay: 0s;
}
.nav__cb:checked ~ .nav__content .nav__item:nth-child(4) .nav__item-text {
  -webkit-transition-delay: 0.3s;
          transition-delay: 0.3s;
}
.nav__btn {
  position: absolute;
  right: 0;
  top: 0;
  width: 90px;
  height: 90px;
  padding: 36px 31px;
  cursor: pointer;
}
.nav__btn:before, .nav__btn:after {
  content: "";
  display: block;
  width: 28px;
  height: 4px;
  border-radius: 2px;
  background: #096DD3;
  -webkit-transform-origin: 50% 50%;
          transform-origin: 50% 50%;
  -webkit-transition: background-color 0.3s, -webkit-transform 1s cubic-bezier(0.48, 0.43, 0.29, 1.3);
  transition: background-color 0.3s, -webkit-transform 1s cubic-bezier(0.48, 0.43, 0.29, 1.3);
  transition: transform 1s cubic-bezier(0.48, 0.43, 0.29, 1.3), background-color 0.3s;
  transition: transform 1s cubic-bezier(0.48, 0.43, 0.29, 1.3), background-color 0.3s, -webkit-transform 1s cubic-bezier(0.48, 0.43, 0.29, 1.3);
}
.nav__btn:before {
  margin-bottom: 10px;
}
.nav__btn:hover:before, .nav__btn:hover:after {
  background: #00bdea;
}
.nav__cb:checked ~ .nav__btn:before {
  -webkit-transform: translateY(7px) rotate(-225deg);
          transform: translateY(7px) rotate(-225deg);
}
.nav__cb:checked ~ .nav__btn:after {
  -webkit-transform: translateY(-7px) rotate(225deg);
          transform: translateY(-7px) rotate(225deg);
}
</style>
</head>
<body>
<nav class="nav">
  <input type="checkbox" class="nav__cb" id="menu-cb" />
  <div class="nav__content">
    <ul class="nav__items">
      <li class="nav__item">
        <span class="nav__item-text">
          Home
        </span>
      </li>
      <li class="nav__item">
        <span class="nav__item-text">
          Works
        </span>
      </li>
      <li class="nav__item">
        <span class="nav__item-text">
          About
        </span>
      </li>
      <li class="nav__item">
        <span class="nav__item-text">
          Contact
        </span>
      </li>
    </ul>
  </div>
  <label class="nav__btn" for="menu-cb"></label>
</nav>

<script>
</script>

</body>
</html>


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