进度条---条纹

background-image: -webkit-linear-gradient(45deg,rgba(255, 255, 255, 0.5) 25%,transparent 25%,transparent 50%,rgba(255, 255, 255, 0.5) 50%,rgba(255, 255, 255, 0.5) 75%,transparent 75%,transparent);
background-image: linear-gradient(45deg, rgba(255, 255, 255, 0.5) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.5) 50%, rgba(255, 255, 255, 0.5) 75%, transparent 75%, transparent);
background-size: 60rpx 60rpx;

// 动画
animation: progress-stripes 2s linear infinite;
@keyframes progress-stripes {
	0% {
		background-position: 0 0;
	}

	100% {
		background-position: 60rpx 0;
	}
}