Css before

Css before is not working

.chart ul:after{
  content: "";
  border:1px solid #f30;
}

Source: stackoverflow.com

Css before

.parent-div {
   position: relative;
   width: 100px;
   height: 100px;
   background: #ffffff;
   border: 1px solid #000000;
}
.div:before {
  content: "";
  width: 20px;
  height: 20px;
  background: blue;
  position: absolute;
  top: 45%;
  left: 45%;
}

Javascript beforeunload

window.addEventListener("beforeunload", function(event) { ... });
window.onbeforeunload = function(event) { ... };

Source: developer.mozilla.org

How use befor after for image

/* for child  */

.custom_img:after {
    content: "";
    background-color: #2359cf;
    height: 400px;
    width: 70%;
    top: -15px;
    right: -6px;
    position: absolute;
    z-index: 999;
}

Similar codes

7 votes65 views1 answer
Dashed css
CSS
0 vote116 views2 answers
Style message d'erreur css
CSS
0 vote63 views1 answer
How to print hello world with css
CSS
0 vote114 views1 answer
How to do stuff in css
CSS
1 vote116 views2 answers
Min css
CSS
0 vote107 views1 answer
Réglage de constantes PHP
CSS
2 votes105 views1 answer
How to make animation stay on 100%
CSS
0 vote244 views2 answers
Html select image background arrow
CSS
0 vote103 views1 answer
Matrix css
CSS
0 vote98 views1 answer
Table td remove padding
CSS