The Parameter tables generally look OK, however for some combinations of description text and screen size the left and right hand columns can run together making it hard to read.
For example: http://jmeter.apache.org/usermanual/component_reference.html#FTP_Request_parms1 Try adjusting the screen width and you will see that the text in one column sometimes touches the adjacent column. I tried playing with padding and margins, but the changes I tried had the side-effect of causing the "Required" column to wrap under the "Name" column at smaller widths. This is far harder to read than the occasional touching column, so I did not apply any fix. I don't have much experience with CSS; perhaps someone else can fix this? Not worth spending lots of time on.