代码标签: div css 鼠标 悬浮 子菜单 旋转 伸缩 展开 导航 菜单

下面为部分代码预览,完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en" >
  <meta charset="UTF-8">
<!-- partial:index.partial.html -->
<link href='https://fonts.googleapis.com/css?family=Alegreya+Sans:400,800' rel='stylesheet' type='text/css'>
    body {
  font-family: Alegreya Sans;
  background: #feeded;
.menu {
  position: relative;
  background: #cd3e3d;
  width: 3em;
  height: 3em;
  border-radius: 5em;
  margin: auto;
  margin-top: 5em;
  margin-bottom: 5em;
  cursor: pointer;
  border: 1em solid #fdaead;
.menu:after {
  content: "";
  position: absolute;
  top: 1em;
  left: 1em;
  width: 1em;
  height: 0.2em;
  border-top: 0.6em double #fff;
  border-bottom: 0.2em solid #fff;
.menu ul {
  list-style: none;
  padding: 0;
.menu li {
  width: 5em;
  height: 1.4em;
  padding: 0.2em;
  margin-top: 0.2em;
  text-align: center;
  border-top-right-radius: 0.5em;
  border-bottom-right-radius: 0.5em;
  transition: all 1s;
  background: #fdaead;
  opacity: 0;
  z-index: -1;
.menu:hover li {
  opacity: 1;
 * Add a pseudo element to cover the space
 * between the links. This is so the menu
 * does not lose :hover focus and disappear
.menu:hover ul::before {
  position: absolute;
  content: "";
  width: 0;
  height: 0;
  display: block;
  left: 50%;
  top: -5.0em;
   * The pseudo-element is a semi-circle
   * created with CSS. Top, bottom, and right
   * borders are 6.5em (left being 0), and then
   * a border-radius is added to the two corners
   * on the right.
  border-width: 6.5em;
  border-radius: 0 7.5em 7.5em 0;
  border-left: 0;
  border-style: solid;
   * Have to have a border color for the border
   * to be hoverable. I'm using a very light one
   * so that it looks invisible.
  border-color: rgba.........完整代码请登录后点击上方下载按钮下载查看