jquery - 在选择器之前使用 css

Question

我正在尝试将一张图片重叠在另一张图片上，然后用它们制作一个圆形图片。

    <span onclick="someFunction()" id="swatch_123456" class="slider-color-swatches" style="background-image: url(anyImage.png);"></span>

.slider-color-swatches{
    position: relative;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    cursor: pointer;
    display: inline-block;
    vertical-align: top;
    overflow: hidden;
    margin-bottom: 10px;
    margin-right: 10px;
}
.slider-color-swatches::before{
    content: '';
    position: absolute;
    background-image: url('anyOtherIamge.pnenter image description hereg');
    left: 20%;
    width: 100%;
    height: 200%;
    top: 0;
    -webkit-transform: rotate(45deg);
    -moz-transform: rotate(45deg);
    transform: rotate(45deg);
}

Here are the images as to what I want to do and where Iam able to get so far

Answer 1

试试这个..可能有用..

{
    width: 28px;
    height: 28px;
    overflow: hidden;
    display: block;
    border-radius: 50%;
    -moz-border-radius: 50%;
    -webkit-border-radius: 50%;
    margin-bottom: 10px;
    -webkit-transition: all 0.3s ease-out;
    -moz-transition: all 0.3s ease-out;
    -o-transition: all 0.3s ease-out;
    transition: all 0.3s ease-out;
    margin: 0 auto;
}