<style> div,span{border:1px solid #000;margin:2px;} </style>
<div>div1</div><div>div2</div><span>span1</span><span>span2</span>
<div style="display:inline">div3</div> <div style="display:inline">
div4</div> <span style="display:block">span3</span> <span style="
display:block">span4</span>
