emacs/test/lisp/textmodes/css-mode-resources/test-indent.css

/* asdfasdf */

.xxx
{
}

article[role="main"] {
    width: 60%;
}

a, b:hover, c {
    color: black !important;
}

a, b:hover {                    /* bug:20282 */
    c {
        color: black;
    }
    color: black;
}

a.b:c,d.e:f,g[h]:i,j[k]:l,.m.n:o,.p.q:r,.s[t]:u,.v[w]:x { /* bug:20282 */
    background-color: white;
}

/* asdfasdf */
@foo x2 {
    bla:toto;
}
.x2
{
    /* foo: bar; */ foo2: bar2;
    bar1: url("http://toto/titi");
    bar2: url('http://toto/titi');
    bar3: url(http://toto/titi);
}

div.x3
{
}

article:hover
{
    color: black;
}

/* bug:13425 */
div:first-child,
div:last-child,
div[disabled],
div::before {
    font: 15px "Helvetica Neue",
          Helvetica,
          Arial,
          "Nimbus Sans L",
          sans-serif;
    font: 15px "Helvetica Neue", Helvetica, Arial,
          "Nimbus Sans L", sans-serif;
    background: no-repeat right
                5px center;
    transform: matrix(1.0, 2.0,
                      3.0, 4.0,
                      5.0, 6.0);
    transform: matrix(
        1.0, 2.0,
        3.0, 4.0,
        5.0, 6.0
    );
}

/* Multi-line selector including both a pseudo-class and
   parenthesis. */
.form-group:not(.required) label,
.birth-date .row > * {
    &::after {
        display: inline;
        font-weight: normal;
    }
}

@font-face {
    src: url("Sans-Regular.eot") format("eot"),
         url("Sans-Regular.woff") format("woff"),
         url("Sans-Regular.ttf") format("truetype");
}

@font-face {
    src:
        url("Sans-Regular.eot") format("eot"),
        url("Sans-Regular.woff") format("woff");
}

.foo-bar--baz {
    --foo-variable: 5px;
    --_variable_with_underscores: #fff;
    --_variable-starting-with-underscore: none;
    margin: var(--foo-variable);
    color: var(--_variable_with_underscores);
    display: var(--_variable-starting-with-underscore);
}