VS2013 inside there is a plug-in called Web Essentials. His extended functionality of CSS is very nice,


` ` `
Aa
.{
- moz - user - select: none;
- ms - user - select: none;
- its - user - select: none;
The user to select: none;
}
` ` `

Like the one above this CSS, he only write 1, he will judge the compatibility, and then give you add the related code,

But after change to VS2019, although also have the plug-in, but not for CSS extensions,

've seen it a few years ago after the 2015 version of the article is Web Essentials to the function of the independent CSS this piece into a plug-in, but can't remember the name,

Don't know which eldest brother can solve this problem,