css中ul li的背景小图标属性设置的两种情况

<style>
.test1 { width:100px; height:265px; background:url(http://www.86image.cn/statics/images/show/li.jpg) no-repeat scroll 0 8px; }
.test1 li {padding-left:30px; line-height:27px; list-style-type:none;}
</style>
<ul class="test1">
<li>one</li>
<li>two</li>
<li>three</li>
<li>four</li>
<li>five</li>
<li>six</li>
<li>seven</li>
<li>eight</li>
<li>nine</li>
<li>ten</li>
</ul>

<style>
.test1 li { padding-left:15px; background:url("http:www.86image.cn/statics/images/tpl1/images/icon_fk.gif" ) no-repeat scroll 1px 8px; line-height:22px; list-style-type:none;}
</style>
<ul class="test1">
<li>1</li>
<li>2</li>
<li>3</li>
</ul>