I haven’t seen the source code, but there should be two styles. The background images of the two styles are different images. For example, the default is a style without √, background-url(xxx), the one without √ is used here. Image path js monitors the hover event, removes the a style, and adds the b style. At this time, the background-url (xxx) of the b style is the image path with √. I am not a professional in writing css. If it is wrong, still Please point it out.
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Pseudo element. In fact, you don’t even need font icons, you can do it with pure CSS. The hook only needs to rotate a p with only two border lines...
To make fonts, you can refer to Fnt-Awesom. There are many kinds of fonts. Just click and add the corresponding class to change the color
Visually it is iconfont
Please search for iconfont, which is the icon font.
is to make the graphic into a font, and then use the CSS
::beforepseudo-element to insert it in front of the element.I haven’t seen the source code, but there should be two styles. The background images of the two styles are different images.
For example, the default is a style without √, background-url(xxx), the one without √ is used here. Image path
js monitors the hover event, removes the a style, and adds the b style. At this time, the background-url (xxx) of the b style is the image path with √.
I am not a professional in writing css. If it is wrong, still Please point it out.