The 1st yellow box is part of the season stats and can only be made thinner by making the panel smaller, which makes the text clump up and overlap if made to thin
the bottom box should be gone if you change the 220 at the top of the file to lets say 150, just to see a huge different or by making the attribute part larger, just to see something change
<layout class="vertical_arrange" vertical_layout="230,1,-485,1,220" offset="0" gap="0"/>