Untitled

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        *{box-sizing:border-box;}


       .box{
           float:left;
           width:33.33%;
           padding:5px;


       }
       .clearfix::after{
           content:"";
           clear:both;
           display:table;
       }


    </style>
</head>
<body>
   <div class="clearfix">
       <div class="box" > <img src="pi.jpg" width="100%">

        </div>
    <div class="box"><img src="pi.jpg" width="100%">

        </div>
    <div class="box"> <img src="pi.jpg" width="100%">

        </div>
   </div>
</body>

</html>