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</script> <style> body{ margin: 0; overflow: hidden; } .box{ width: 10rem; height: 10rem; margin: 0.33333rem; background: pink; float: left; font-size: 30px; } </style> </head> <body> <div class="box">box1</div> <div class="box">box2</div> <div class="box">box3</div> <div class="box">box4</div> <div class="box">box5</div> <div class="box">box6</div> </body> </html>