4 questions (feutured slider, menu items, HTML code, imagesize in slider)

Running latest WP with latest theme on fleksjobbernetvaerket.dk 1) The primary menu item "Startside" and "Erhvervsdrivende" seems to have the same background color, like both (menu)items has been activated - shouilden't only "Startside" be with a lighter background color? 2) I tried to uses <b> </b> <br> and such in the field where I write text - in the feutured slider-system. But its kinda not working? 3) Feutured slider - when I load my site, or reload it with CTRL+F5, the white-on-back-arrows on the slider images first loads in the top area of the images, then changes thier place in them middle of the images - should it really be this way? 4) I uses images of 1200x400 for feutured slider. Is there any way I could hava a smaller feutured slider-area, so the that are wouldent take so much space - so i could just do fine with pictures of e.g.: 800x400 of size? thanks Knud