BA Website Layout Issue!

» I am experiencing this overlapping issue on website Header in my firefox browser as we can see in the picture attached.
» Also, the website has empty side space on both sides. Is that the way it is suppose to be ?
» Can the website be of 16:9 aspect ratio ?

Version? Operation System ??

There seems to be some squezing with a width of less than 1000px (no wonder)
( FF 88, vivaldi 3.8.2259, opera 67.0.3575 (old), linux debian 9)

Next two question: Have you even used BA before ???