.box{background-color:#fff;background-image:repeating-linear-gradient(45deg,rgba(195,72,72,.5),rgba(195,72,72,.5) 20px,transparent 0,transparent 40px),repeating-linear-gradient(315deg,rgba(195,72,72,.5),rgba(195,72,72,.5) 20px,transparent 0,transparent 40px)}