Bài này không có gì đặc biệt chủ yếu là để tham khảo.<br />
Demo:
<style type="text/css">
.curlycontainer{
border: 1px solid #b8b8b8;
margin-bottom: 1em;
width: 300px;
}

.curlycontainer .innerdiv{
background: transparent url(http://phpbasic.com/phpbasic_data/include/brcorner.gif) bottom right no-repeat;
position: relative;
left: 2px;
top: 2px;
padding: 1px 4px 15px 5px;
}

</style>
<div class="curlycontainer">
<div class="innerdiv">
<b>Some title</b> <br />
Some text here.Some text here. Some text here.<br />
Some text here.Some text here. Some text here.<br />
Some text here.Some text here. Some text here.<br />
Some text here.Some text here.
</div>
</div>