CSS的一些小问题如网页中版权符号显示问题等等

<span style="font-size:18px;"><span style="font-family:宋体;">©</span>：©
<span style="font-family:Arial;">©</span>：©</span>

<span style="font-size:18px;"><b style="position:absolute;border-style:solid;border-color: #fff #fff #666; border-left-width:4px; border-right-width:4px;border-top-width:4px; margin-left:4px;top:3px;"></b>//倒三角css
<b style="position:absolute;top:12px;border-style:solid;border-color:#666 #f5f5f5 #f5f5f5; border-left-width:4px; border-right-width:4px; border-top-width:4px; margin-left:3px;"></b>//正三角css</span>