.c_main {width: 100%;margin: 0 auto;text-align: center;margin-bottom: 18%;}
.head{height: 60px;
    line-height: 60px;
    background: #dcdcdc;
    width: 110%;
    margin-left: -6%;}
.input_id{margin:0 auto;margin-top: 50%;
    display: block;
    width: 54%;
    height: 3em;
    text-align: center;
    background: #acacac;
    border-radius: 6px;}
.c_main button{background: #fff;width: 40%;height: 3em;border-radius: 4px;border: 1px solid #dcdcdc;margin-bottom: 18%;}
.c_main input::-webkit-input-placeholder{color:#fff;}
.warn{margin:0 auto;margin-top: 32%;width: 76%;
        height: 3.7em;text-align: center;border: 1px solid #eee;border-radius: 6px;
        box-shadow: darkgrey 0px 2px 4px 0px; }
.warn img{float: left;width: 8%;margin-top: 6%;margin-left: 2%}
.warn p{margin-top: 3%;}
/*内容页*/
.c_content{width: 100%;margin: 0 auto;}
.c_content p {margin: 0 0 2% 0;}
.c_content .logo_one{width:100%;
	border: 1px solid #eee;
	border-radius: 8px;
	box-shadow: darkgrey 0px 2px 4px 0px;
	text-align: center;
	margin-top: 10px;}
.top_content{border-bottom: 1px solid #d3d3d3;margin: 0 auto;width: 100%;padding-bottom: 6%;}
.top_content img{width: 22%;float: left;margin-right: 6%;}
.main_top {margin-top: 6%;margin-bottom: 4%;}
.main_content{margin: 0 auto;width: 95%}
.main_content video{margin: 0 auto;width: 100%;border-radius: 8px;}
.main_content img {margin: 0 auto;width: 100%;}
.main-bottom {margin-top: 6%;}
.c_but{margin-top: 20%;width: 20% ;    box-shadow: darkgrey 0px 2px 4px 0px;  }
.on {border: 1px solid #333;margin: 4% 0 0 4%;width: 100%;}
.footer{text-align: center;padding: 6% 0 6% 0;border-top: 1px solid #eee;}