Question

关于逗号分隔的css类，我有一个奇怪的问题。 Firefox会忽略以下类.Control-fakeSelect::after： - See result

.Control-field::-webkit-calendar-picker-indicator,
.Control-fakeSelect::after{
    background-color: transparent; /* 1 */
    background-image: url("data:image/svg+xml;utf8,%3Csvg%20width%3D%2215%22%20height%3D%229%22%20viewBox%3D%220%200%2015%209%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Cg%20fill%3D%22none%22%20fill-rule%3D%22evenodd%22%3E%3Cg%20fill%3D%22%23444%22%3E%3Cpath%20d%3D%22M11.773.583L7.38%204.976%202.987.583C2.432.028%201.532.028.977.583c-.555.555-.555%201.455%200%202.01L6.374%207.99c.28.278.642.417%201.006.417.09%200%20.182-.01.27-.026.27-.05.526-.18.734-.39l5.4-5.397c.554-.555.554-1.455%200-2.01-.556-.555-1.456-.555-2.01%200z%22%2F%3E%3C%2Fg%3E%3C%2Fg%3E%3C%2Fsvg%3E");
    background-position: center right;
    background-repeat: no-repeat;
    color: transparent; /* 1 */
    content: "";
    cursor: pointer;
    height: 15px;
    line-height: 15px;
    margin-top: 2px;
    opacity: 1; /* 1 */
    padding: 10px 0 10px 20px;
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 15px;
}

但是，如果我从逗号分隔列表中删除.Control-field::-webkit-calendar-picker-indicator，那么css看起来像这样：

.Control-fakeSelect::after{
    background-color: transparent; /* 1 */
    background-image: url("data:image/svg+xml;utf8,%3Csvg%20width%3D%2215%22%20height%3D%229%22%20viewBox%3D%220%200%2015%209%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Cg%20fill%3D%22none%22%20fill-rule%3D%22evenodd%22%3E%3Cg%20fill%3D%22%23444%22%3E%3Cpath%20d%3D%22M11.773.583L7.38%204.976%202.987.583C2.432.028%201.532.028.977.583c-.555.555-.555%201.455%200%202.01L6.374%207.99c.28.278.642.417%201.006.417.09%200%20.182-.01.27-.026.27-.05.526-.18.734-.39l5.4-5.397c.554-.555.554-1.455%200-2.01-.556-.555-1.456-.555-2.01%200z%22%2F%3E%3C%2Fg%3E%3C%2Fg%3E%3C%2Fsvg%3E");
    background-position: center right;
    background-repeat: no-repeat;
    color: transparent; /* 1 */
    content: "";
    cursor: pointer;
    height: 15px;
    line-height: 15px;
    margin-top: 2px;
    opacity: 1; /* 1 */
    padding: 10px 0 10px 20px;
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 15px;
}

Firefox识别css类。 See result

之前有任何人遇到此问题或者知道为什么Firefox在添加到逗号分隔的css类时会忽略::？

Answer 1

此行为是正确且有意的。您的选择器是：

.Control-field::-webkit-calendar-picker-indicator,
.Control-fakeSelect::after

由于Firefox不能（不会）解析第一个，因为它的供应商特定，它认为整个规则原子无效，因为它不知道如何完全适用它。 IE和Edge也会这样做。

所以你的观察是错误的，它与:after或逗号没有关系，它与-webkit前缀有关，而且是故意的按规格正确的行为。将规则拆分为2，它将正常工作。

Firefox忽略CSS逗号分隔的类

1 个答案: