css实现文字渐变

html代码

<span>15</span>

css代码

.valueStyle{
    font-weight:600;
    font-size:25px;
    margin-bottom:0px;
    cursor:pointer;
    background-image:-webkit-linear-gradient(bottom,red,#ff5f60,#f0c41b); 
    -webkit-background-clip:text; 
    -webkit-text-fill-color:transparent; 
}

效果图