Larger message window when posting in forums

[Skecis]

As the title explains, the current message window is very small and when posting larger text with more RP or info it's quite difficult to manage. (especially if using BB code table)

Currently, the message window is 175 pixels in height in CSS but I think it should be around 500.

Spoiler for With 175 pixels::

Spoiler for With 500 pixels::

[Skecis]

Sorry, just realised this does not only involve SA:MP.
Would be appreciated if someone could transfer this topic to a board that fits, thank you.