在 3 个 div 后面放置一个 Div
Placing a Div behind 3 divs
目的是对下面的设计进行编码,在垂直直线(桌面上为水平)上方出现 3 个框。
我尝试使用 :: before
伪选择器创建它。
代码如下:
HTML
<div className={clsx(styles.container__box, styles['container__box--1'])}>
Box 1
</div>
<div className={clsx(styles.container__box, styles['container__box--2'])}>
Box 2
</div>
<div className={clsx(styles.container__box, styles['container__box--3'])}>
Box 3
</div>
CSS
&__box {
width: 25rem;
height: 25rem;
&:not(:last-child) {
margin-bottom: 5rem;
}
&--1 {
background-color: red;
z-index: 100;
}
&--2 {
background-color: green;
position: relative;
&::before {
content: "";
background-color: black;
color: red;
font-weight: bold;
height: 85rem;
width: 1rem;
display: block;
position: absolute;
top: -120%;
left: 50%;
}
}
&--3 {
background-color: yellow;
z-index: 100;
}
}
我无法隐藏父选择器后面的伪选择器 div。
*{
margin:0px;
padding:0px;
box-sizing: border-box;
}
body{
height:100vh;
display:flex;
justify-content:center;
align-items:center;
flex-direction: column;
}
.container{
position:relative;
}
.container span{
background:black;
height:300px;
display:block;
width:10px;
position: absolute;
left:47%;
top:20px;
}
.box1,
.box2,
.box3{
background:greenyellow;
width:100px;
height:100px;
border:1px solid blue;
margin:10px 0px;
position: relative;
}
<body>
<div class="container">
<span></span>
<div class="box1"></div>
<div class="box2"></div>
<div class="box3"></div>
</div>
</body>
尝试将父 div 位置设置为 relative 然后将 before 伪元素的 z-index 设置为 -1
.parent-div {
position: relative;
}
.parent-div::after {
content: "";
position: absolute;
z-index: -1;
}
目的是对下面的设计进行编码,在垂直直线(桌面上为水平)上方出现 3 个框。
我尝试使用 :: before
伪选择器创建它。
代码如下:
HTML
<div className={clsx(styles.container__box, styles['container__box--1'])}>
Box 1
</div>
<div className={clsx(styles.container__box, styles['container__box--2'])}>
Box 2
</div>
<div className={clsx(styles.container__box, styles['container__box--3'])}>
Box 3
</div>
CSS
&__box {
width: 25rem;
height: 25rem;
&:not(:last-child) {
margin-bottom: 5rem;
}
&--1 {
background-color: red;
z-index: 100;
}
&--2 {
background-color: green;
position: relative;
&::before {
content: "";
background-color: black;
color: red;
font-weight: bold;
height: 85rem;
width: 1rem;
display: block;
position: absolute;
top: -120%;
left: 50%;
}
}
&--3 {
background-color: yellow;
z-index: 100;
}
}
我无法隐藏父选择器后面的伪选择器 div。
*{
margin:0px;
padding:0px;
box-sizing: border-box;
}
body{
height:100vh;
display:flex;
justify-content:center;
align-items:center;
flex-direction: column;
}
.container{
position:relative;
}
.container span{
background:black;
height:300px;
display:block;
width:10px;
position: absolute;
left:47%;
top:20px;
}
.box1,
.box2,
.box3{
background:greenyellow;
width:100px;
height:100px;
border:1px solid blue;
margin:10px 0px;
position: relative;
}
<body>
<div class="container">
<span></span>
<div class="box1"></div>
<div class="box2"></div>
<div class="box3"></div>
</div>
</body>
尝试将父 div 位置设置为 relative 然后将 before 伪元素的 z-index 设置为 -1
.parent-div {
position: relative;
}
.parent-div::after {
content: "";
position: absolute;
z-index: -1;
}