<div class="details-backgroun" :style="'background-image: linear-gradient(90deg, rgba(19,21,77,.9) 15%,rgba(19,21,77,.1) 80%),url(' + url +');'"> </div>
data(){ return{ url: 'https://img2.baidu.com/it/u=3260942491,3130294538&fm=26&fmt=auto', } }
效果