CSS条纹背景

.div{
    background: #233557;
    background-image: linear-gradient(-45deg,rgba(150,150,150,0.1) 25%,rgba(150,150,150,0.2) 0,rgba(150,150,150,0.2) 50%,rgba(150,150,150,0.1) 0,rgba(150,150,150,0.1) 75%,rgba(150,150,150,0.2) 0);
    background-size: 30px 30px;
}

 其实思路很简单：

 其实形成条纹的关键就是background-image中百分比设置决定的