The button shown is adapted to Boostrap which is only shown depending on the Resolution of your Computer or Mobile Device, if you are the programmer you have to adapt the Buttons so that they are outside the Divs that by default are shown only for Responsive or Devices Mobile, so that you can check, touch the F12 key on your keyboard, an icon of a Cell phone will appear, click on it and then change the dimensions or choose a Mobile operating system, there you can check the problem.
Another option is to try deactivating the Ads protector of your Brave browser and check that they are displayed perfectly and then activate them again.
Another solution is to change the Resolution of your Browser until you reach the desired change.