<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Document</title>
<link rel="stylesheet" href="./css/bootstrap.min.css">
<style>
.main{
width: 100%;
}
.box-wrap div{
border: 1px solid #000;
}
/* 解决使图片全屏显示有空白边距的问题
1，col 设置内边距为0
2，图片设置 width:100%
*/
.p-0{
padding: 0;
}
img{
width: 100%;
}
</style>
</head>
<body>
<div class="container-fluid">
<div class="row box-wrap">
<div class="col-md-12 col-xs-12 p-0">
<img src="./images/bg1.jpg" alt="" class="img-responsive">
</div>
<div class="col-md-12 col-xs-12">.col-md-1</div>
<div class="col-md-12 col-xs-12">.col-md-1</div>
</div>
</div>
<div class="main">
<div class="container">
</div>
</div>
</body>
</html>
