body,
html {
	margin: 0;
	padding: 0;
	overflow: hidden;
	/* 防止出现滚动条 */
	height: 100%;
	background-color: #333;
	/* 默认背景 */
	display: flex;
	justify-content: center;
	align-items: center;
}

#game-container {
	position: relative;
	width: 100vw;
	height: 100vh;
	/* max-width: 800px; */
	/* max-height: 600px; */
	/* border: 2px solid #ccc; */

	/* 新增此行：让背景颜色变化产生1.5秒的缓动过渡效果 */
	transition: background-color 1.0s ease;
}

#game-canvas {
	display: block;
	position: absolute;
	width: 100%;
	height: 100%;
}


#hp-bar-container {
	position: absolute;
	top: 10px;
	left: 50%;
	transform: translateX(-50%);
	width: 80%;
	height: 20px;
	background-color: rgba(0, 0, 0, 0.3);
	border: 1px solid #fff;
	border-radius: 10px;
	z-index: 10;
}

#hp-bar {
	width: 100%;
	height: 100%;
	background-color: #A9D681;
	/* 绿色血条 */
	border-radius: 10px;
	transition: width 0.5s ease-in-out;
}