Hi there, are you talking about the GoogleAd that is escaping the side bar?
If so you can either select an advert that fits the container width which is 250px wide, their used to be a 240px x 400px banner ad with google.
Alternatively you can increase the size of the sidebar, either by increasing the container width in Customiser > Layout > Container or increasing the % the sidebar occupies in Customiser > Layout > Sidebars (you can also reduce the sidebar padding).
Hi David, yes that sidebar, but it is not only the ad that looks like that. I can add another image and it still jumps to the right. If I change the size of the sidebar, it will affect all the sidebars, wouldn’t it?