<div style="margin:10px;box-shadow:2px 3px 5px rgba(0,0,0,.2);border-style:solid;border-width:5px;border-color:#fff #ccc #aaa #ccc;background:#eee;padding:5px;"><div style="border-style:solid;border-width:3px;border-color:#aaa #ccc #fff #ccc;background:#eee;padding:5px;"><div style="border-style:solid;border-width:2px;border-color:#aaa #ccc #fff #ccc;background:#eee;padding:3px;"><div style="border:solid 1px #ddd;background-color:#ffe;padding:10px;box-shadow:0px 0px 10px rgba(150,150,0,.2) inset;color:#567;">枠内の文字</div></div></div></div>