* {
	margin: 0;
	padding: 0;
	-webkit-transition: all 0.3s;
	-moz-transition: all 0.3s;
	-ms-transition: all 0.3s;
	-o-transition: all 0.3s;
	transition: all 0.3s;
}
body {
    background: #1b212d;/*
    background: linear-gradient(0deg,#1f2739,#1b212d);/**/
    color: white;
    font-size: 16px;
    width: 100%;
    max-width: 1920px;
    font-family: "Arial","微软雅黑","思源黑体",sans-serif;
}
div#allContainer {
	background: linear-gradient(0deg,#1b212d,#1f2739);
}
/* 这里原来是一个孤零零的返回箭头
nav {
	width: 74.7916667%;
	margin: 0 auto;
	padding-top: 115px;
}
nav a {
	width: 92px;
	height: 35px;
	display: inline-block;
	background: url(../img/back_before.png);
}
nav a:hover {
	background: url(../img/back.png);
}
*/
div#main {
	width: 74.7916667%;
	margin: 18vh auto 0px;
	position: relative;
	/* 项目一多，flex布局就不好使了，有些乱，先暂时注释掉。
	display: flex;
	flex-wrap: wrap;
	justify-content: space-around;
	align-items: flex-start;
	align-conten: flex-start;/**/
}
div#main a:link,div#main a:visited {
	display: block;
	text-decoration: none;
	text-align: center;
	color: #fff;
	border: solid 1px rgba(255,255,255,0.1);
	padding: 80px;
	border-radius: 50px;
	-webkit-transition: all 0.3s;
	-moz-transition: all 0.3s;
	-ms-transition: all 0.3s;
	-o-transition: all 0.3s;
	transition: all 0.3s;
	margin-bottom: 50px;
}
span.category {
	display: block;
	font-family: '微软雅黑','思源黑体'sans-serif;
	font-size: 40px;
	font-weight: bold;
	padding-bottom: 10px;
}
span.intro {
	font-size: 14px;
	color: #4b4e60;/*#515677*/
}
div#main a:hover {
	color: #5e48ec;
	border: solid 1px #fff;
	padding: 80px;
	border-radius: 5px;
	background: #fff;
}

footer {
	color: #858c9b;/*dcdde6*/
	width: 74.7916667%;
	margin: 0 auto;
	padding: 100px 0px 50px;
	font-size: 14px;
	border-top: solid 1px rgba(255,255,255,0);
}

@media screen and (min-width: 1320px) and (max-width: 1600px) {

}
@media screen and (min-width: 1024px) and (max-width: 1319px) {

}
@media screen and (min-width: 768px) and (max-width: 1023px) {

}
@media screen and (min-width: 480px) and (max-width: 767px) {

}
@media screen and (min-width: 8px) and (max-width: 1319px) {
	
}
@media screen and (max-width: 1090px) {
	div#main {
	margin: 15vh auto 0px;
	}
}
@media screen and (max-width:420px) {
	
	div#main {
		margin-top: 12vh;
	}
	div#main a:link,div#main a:visited {
		padding: 60px;
	}
	span.category {
		font-size: 35px;
	}
	span.intro {
		font-size: 14px;
	}
	footer {
		padding: 50px 0px 25px;
	}
	footer p {
		font-size: 10px;
	}
}