css - 在 CSS 中添加注释的语法是什么？

Question

我们可以在 CSS 中以多少种方式和位置放置注释？

注释的放置会在 CSS 渲染和验证中造成任何问题吗？

Answer 1

CSS specification明确说明这一点:

Comments begin with the characters /* and end with the characters */. They may occur anywhere between tokens, and their contents have no influence on the rendering. Comments may not be nested.

CSS also allows the SGML comment delimiters (<!-- and -->) in certain places defined by the grammar, but they do not delimit CSS comments. They are permitted so that style rules appearing in an HTML source document (in the STYLE element) may be hidden from pre-HTML 3.2 user agents. See the HTML 4 specification ([HTML4]) for more information.

例如:

.row {background-color:#FFF;}  /* normal */
.row:hover {background-color:#CCC; /* grayed background */}
 
/* the title class */
.title{
    /* make font bigger */
    font-size: 160%;
}