body,p,img,h1,h2{margin: 0;padding: 0;}
body{background-color: #f2f2f2;}
.container{max-width: 1200px;width: 100%;margin: 12% auto;}
.part1, .part2{width: 50%;float: left;}
.part2{margin-top: 120px;text-align: center;}
.part2 .txt{color: #7a7a7a;}
.part2 .txt h1{font-size: 28px;line-height: 45px;}
.btn-box{margin-top: 35px;}
.btn-box button{background-color: #00a0e9;border: 0;padding: 10px 25px;color: #fff;border-radius: 5px;}
.imgbox{width:600px;height:460px;background-image: url("../images/p_nowifi.png");background-size: cover;}
.imgbox2{background-image: url("../images/p_404.png");}
/*移动端样式
!*----------------*/
@media only screen and (max-width:768px) {
    .part1, .part2{width:100%;margin: 0 auto;}
    .part2{margin-top: 20px;text-align: center;}
    .part2 .txt{color: #7a7a7a;padding-left: 0px;}
    .part2 .txt h1{font-size: 18px;line-height: 35px;}
    .btn-box{margin-left: 0%;margin-top: 35px;text-align: center;}
    .imgbox{margin: 10% auto;width:80%;height:240px;background-image: url("../images/m_nowifi.png");background-size: cover;background-position: center center;}
    .imgbox2{background-image: url("../images/m_404.png");}
}