Pure CSS to achieve three-level navigation bar
Direct code
<! DOCTYPEhtml>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="Width = device - width, initial - scale = 1.0">
<title>Pure CSS to achieve three-level navigation bar</title>
<style>
* {
padding: 0;
margin: 0;
}
ul.ol {
list-style: none;
}
a {
text-decoration: none;
color: # 232323;
}
.flex_box {
display: flex;
}
.nav_ctn {
width: 100%;
padding-top: 50px;
}
.pc_width {
width: 1200px;
margin: auto;
border: 1px solid rgba(243.244.246.1);
}
.nav_ctn {
font-size: 15px;
height: 57px;
}
.nav_ctn .item {
height: 60px;
display: flex;
align-items: center;
justify-content: center;
padding: 0 13px;
white-space: nowrap;
cursor: pointer;
}
.item.active {
border-top: 1px solid #f2a525;
background: #fffaf1;
}
.nav_ctn .item:hover {
border-top: 1px solid #f2a525;
background: #fffaf1;
}
.nav_ctn .pc_width {
align-items: center;
height: 57px;
}
.head_ctn {
background: #202f80;
color: #474a47;
text-align: center;
font-size: 16px;
height: 70px;
font-weight: 700;
display: flex;
flex-direction: row;
justify-content: center;
align-items: center;
color: #fff;
}
.one_menu {
display: block;
position: relative;
z-index: 8;
}
.one_menu>ul {
display: none;
position: absolute;
top: 57px;
left: 0;
}
.one_menu>ul li ul {
background: #fff;
display: none;
position: absolute;
width: 180px;
right: -180px;
text-align: left;
line-height: 20px;
top: 0px;
}
.one_menu>ul li {
background: #fff;
text-align: left;
font-size: 14px;
font-weight: 500;
position: relative;
}
.one_menu>ul a {
color: #065e77;
display: block;
width: 180px;
line-height: 40px;
padding: 10px 20px;
}
.one_menu>ul a:hover {
color: #1bb1dc;
}
.one_menu>ul li:hover {
background-color: #eee;
}
.nav_ctn div :hover>ul {
display: block;
}
.head_main {
position: relative;
height: 24px;
}
.head_ctn a {
display: inline-block;
right: 10%;
height: 35px;
line-height: 35px;
width: 100px;
background: red;
border-radius: 4px;
color: #fff;
position: absolute;
top: -5px;
}
</style>
</head>
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Copy the codeThe core code
.nav_ctn div :hover>ul {
display: block;
}
Copy the code- :hover Whether there is a space before it
- If there is no space, the code selects the entire div container; if there is space, it selects one of the floating children below the div
Related blog
- Thanks to the big guy for the code inspiration