I already saw this link.
But, I can't use CSS because I'm not Admin and haven't Head Edit permission.
I can use only Source Editor.
How can I make table border within panel to use only html tag?
If you have access to the html macro then you could do it. That macro is turned off by default. So, if your admin hasn't turned it on then that won't work either. Another option would be the stylesheet macro that is included in the content formatting macros. Again this would need to be setup by an admin. If you don't have access to either of those then I am afrain you are out of luck.
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