HTML Marquee character fragment scrolling_HTML/Xhtml_web page production

The following attributes:

direction
Set the scrolling direction of active subtitles

The code is as follows:
Set the scrolling direction of active subtitles direction="down": toward Next
Set the scrolling direction of active subtitles direction="left": to the left
Set the scrolling direction of active subtitles direction="right": to the right
Set the scrolling direction of active subtitles direction="up": upward

behavior
Set the scrolling method:
alternate: expressed at both ends Scroll back and forth between.
scroll: means scrolling from one end to the other, and will be repeated.
slide: means scrolling from one end to the other without repetition.
The code is as follows:
alternate: means scrolling back and forth between the two ends.
scroll: Indicates scrolling from one end to the other, and will repeat.
slide: Indicates scrolling from one end to the other without repetition.

scrollamount
Set the scrolling speed of active subtitles in pixels
The code is as follows:
scrollamount="10"
scrollamount ="20"
scrollamount="30"

scrolldelay
Set the delay time between active subtitles scrolling twice, unit millisecond (millisecond)
A larger value will have the effect of one step and one pause
The code is as follows:
scrolldelay="10"
scrolldelay="100"
scrolldelay="1000"