CSS伪元素“后”

Question

我正在尝试使用两个伪元素:after，但只有第一个正在运行：

[data-msgcounter]:after {
    background-color: #FF6969;
    background-image: -webkit-linear-gradient(#FF6969 0%, #ff0000 100%);
    background-image: -moz-linear-gradient(#FF6969 0%, #ff0000 100%);
    background-image: -o-linear-gradient(#FF6969 0%, #ff0000 100%);
    background-image: -ms-linear-gradient(#FF6969 0%, #ff0000 100%);
    background-image: linear-gradient(#FF6969 0%, #ff0000 100%);
    content: attr(data-msgcounter);
}​

[data-notcounter]:after {
    background-color: #FF6969;
    background-image: -webkit-linear-gradient(#FF6969 0%, #ff0000 100%);
    background-image: -moz-linear-gradient(#FF6969 0%, #ff0000 100%);
    background-image: -o-linear-gradient(#FF6969 0%, #ff0000 100%);
    background-image: -ms-linear-gradient(#FF6969 0%, #ff0000 100%);
    background-image: linear-gradient(#FF6969 0%, #ff0000 100%);
    content: attr(data-notcounter);
}​

任何人都有提示或解决方案吗？