/** 白屏阶段会执行的 CSS 加载动画 */

#app-loading {
	position: relative;
	top: 45vh;
	margin: 0 auto;
	color: #409eff;
	font-size: 12px;
}

#app-loading,
#app-loading::before,
#app-loading::after {
	width: 2em;
	height: 2em;
	border-radius: 50%;
	animation: 2s ease-in-out infinite app-loading-animation;
}

#app-loading::before,
#app-loading::after {
	content: "";
	position: absolute;
}

#app-loading::before {
	left: -4em;
	animation-delay: -0.2s;
}

#app-loading::after {
	left: 4em;
	animation-delay: 0.2s;
}

@keyframes app-loading-animation {
	0%,
	80%,
	100% {
		box-shadow: 0 2em 0 -2em;
	}
	40% {
		box-shadow: 0 2em 0 0;
	}
}