<style type="text/css"> .a {width:350px} .a span {width:100px; height:100px; float:left; display:inline-block; border:1px dashed green; margin:-1px 0 0 -1px} </style> <div class="a"> <span>1</span> <span>2</span> <span>3</span> <span>4</span> <span>5</span> <span>6</span> <span>7</span> <span>8</span> </div>