用CSS实现文本左右对齐且首行缩进的代码

<p class="elegant">Our online order form allows you to order directly in the internet, saving your time and offering you convenience. Here’s how you do it.</p>
<p class="elegant">When you want to buy our commodities, please register first. After you create your account successfully, you can directly order our products and pay for them. Next time you just click “log in”, you can enter your account, then shopping simply and conveniently.</p>

<style type="text/css">
*.elegant
{
margin-left: 40px;
margin-right: 80px;
letter-spacing: 1px;
word-spacing: 2px;
line-height: 1.7em;
text-indent: 40px;
text-align: justify;
}
</style>