* {
	margin:0;
	padding:0
}
body {
	background:#191919;
	overflow:hidden;
}
/*时钟设置选项*/
#option {
	position:absolute;
	top:30px;
	display:flex;
	justify-content:center;
	align-items:center;
	line-height:50px;
	text-align:center;
	height:50px;
	font-size:20px;
	color:#717171;
}
#option h6 {
	display:inline;
	font-size:20px;
	margin-left:20px;
}
#option span {
	font-size:12px;
	margin-left:10px
}
/**
*更改checkbox样式
 */
/*隐藏默认的checkbox复选框*/
#option input[type=checkbox] {
	visibility:hidden;
}
/*滑动背景*/
.checkButton {
	position:relative;
	display:inline-block;
	width:50px;
	height:20px;
	border-radius:15px;
	border:2px solid #3b84dd;
	background:#191919;
}
/*滑轨*/
.checkButton:after {
	position:absolute;
	left:5px;
	top:9px;
	z-index:1;
	/*隐藏在滑块下*/
    content:'';
	width:40px;
	height:1px;
	background:white;
}
/*滑块*/
#option  label {
	position:absolute;
	left:5px;
	z-index:2;
	/*显示在滑块上*/
    width:10px;
	height:10px;
	margin-top:3px;
	border-radius:100%;
	border:1px solid #25f7ff;
	background:#3b84dd;
	box-shadow:1px 1px 3px #25f7ff;
	animation:bounceBack 1s forwards ease-in-out;
}
/*!!!!!必须使用+选择器选择相邻的兄弟元素之后才能操作后边的元素*/
#option input[type=checkbox]:checked+.checkButton label {
	animation:bounce 1s forwards ease-in-out;
}
@keyframes bounce {
	0% {
	left:5px
}
90% {
	left:40px
}
100% {
	left:35px
}
}@keyframes bounceBack {
	0% {
	left:35px
}
90% {
	left:0
}
100% {
	left:5px
}
}/*弹性盒容器*/
#flexContainer {
	display:flex;
	/*子元素的布局方式在父元素设置*/
    justify-content:center;
	/*水平居中*/
    align-items:center;
	/*垂直居中*/
    width:100%;
	height:100vh;
	/*设置高度后align-items才生效*/
    /*1vh=1%屏幕高度*/
    background:#191919
}
/**
*时钟背景
 */
#clockContainer {
	display:flex;
	justify-content:center;
	align-items:center;
	width:95%;
	height:350px;
	border:5px solid #5d5d5d;
	border-radius:15px;
	background:#242424;
}
/**
*翻页数字容器
 */
.flipNumber {
	position:relative;
	box-sizing:border-box;
	width:14%;
	height:300px;
	margin-left:1.4%;
	text-align:center;
	font-size:250px;
	/*时钟字体大小*/  
	line-height:300px;
	background:#ffffff;
	box-shadow:1px 1px 5px black;
}
/**
*时间分隔符
 */
.divide {
	width:2%;
	height:100px;
	line-height:100px;
	margin-left:1%;
	font-size:6rem;
	color:#717171;
	text-align:center;
}
/**
*页样式,用前后伪元素实现翻页的样式
*前后伪元素的值为.time中data-number属性的值
*before是上半页，after是下半页
*伪元素一个：是css2写法,两个：：是css3写法
 */
.time::before,.time::after {
	content:attr(data-number);
	position:absolute;
	left:0;
	right:0;
	overflow:hidden;
	color:#717171;
	background:#191919;
	perspective:100px;
	-webkit-perspective:160px;
}
.time::before {
	top:0;
	bottom:50%;
	border-bottom:1px solid #717171;
	/*转轴*/
}
.time::after {
	top:50%;
	bottom:0;
	line-height:0;
}
/*翻转前*/
.flipNumber .front::after,.flipNumber .back::before {
	z-index:1;
}
.flipNumber .back::after {
	z-index:2;
	transform-origin:center top;
	-webkit-transform-origin:center top;
	transform:rotateX(0.5turn);
	/*转半圈*/     -webkit-transform:rotateX(0.5turn);
}
.flipNumber .front::before {
	z-index:3;
}
/*翻转后*/
.flipNumber.running .front::before {
	transform-origin:center bottom;
	-webkit-transform-origin:center bottom;
	animation:frontFlipDown 0.6s ease-in-out;
	-webkit-animation:frontFlipDown 0.6s ease-in-out;
	box-shadow:0 -2px 6px rgba(255,255,255,0.3);
	backface-visibility:hidden;
	/*隐藏背面*/     -webkit-backface-visibility:hidden;
}
.flipNumber.running .back::after {
	animation:backFlipDown 0.6s ease-in-out;
	-webkit-animation:backFlipDown 0.6s ease-in-out;
}
/*十二小时制下提示上下午*/
#twelve {
	display:none;
	position:absolute;
	bottom:100px;
	right:40px;
	width:100px;
	height:50px;
	line-height:50px;
	text-align:center;
	border:5px solid #5d5d5d;
	border-radius:15px;
	font-size:25px;
	color:#717171;
}
/**
*动画
*/
@keyframes frontFlipDown {
	to {
	transform:rotateX(0.5turn)
}
}@keyframes backFlipDown {
	to {
	transform:rotateX(0)
}
}@-webkit-keyframes frontFlipDown {
	to {
	-webkit-transform:rotateX(0.5turn);
}
}@-webkit-keyframes backFlipDown {
	to {
	-webkit-transform:rotateX(0);
}
}