[note] html 跑馬燈

<marquee>跑馬內容</marquee>

ex:
跑馬內容

可用屬性：
align="top" (top, midden, botton)
direction="up" (left, right, up, down)
behavior="altemate" (altemate, slide, scroll)
height, width, bgcolor
速度 scrollamount default 5