.left {
    margin-left: 10px;
}

.tag {
    color: #6c6c6c;
    height: 24px;
    background: #F5F5F5;
    border-bottom: 1px solid #eee;
}

.in {
    margin: 0 auto;
    line-height: 25px;
    font-size: 12px;
}

.header {
    height: 40px;
    # height: 80px;
    background: url(../images/ico.png) repeat-x 0 2px;
    border-bottom: 1px solid #f4f4f4;
}

.cur {
	color: red;
}

.header_top {
    MARGIN: 0px auto;
}

.nav_ul {
    margin-top: 10px;
	margin-left: 5px;
    list-style-type: "none";
   
    display: flex;        
    flex-wrap: wrap;
    justify-content: space-around;
}

.nav_ul > li {
    width: 72px;
}

.nav_ul > li:first-child {
     /* 让最后一个元素的右边距自动适应，从而实现左对齐的效果。*/
    width: 40px;
}

.nav_ul > li:last-child {
     /* 让最后一个元素的右边距自动适应，从而实现左对齐的效果。*/
    margin-right: auto; 
}

li {
    list-style-type: none;
}

@media screen and (max-width: 780px)
.home .bans>img {
    height: 250px;
    min-height: unset;
}

.home .bans>img {
    width: 100%;
    min-height: 300px;
}
@media screen and (max-width: 780px)
.on-pc {
    display: none !important;
}
.on-pc {
    display: flex !important;
}