Change the size of my content area

I have an avatar on the left side which is distorting my ads and overlapping onto my sidebar. Previously my old wp theme did not have this. I moved my site to a different host and this is what I got. I need to remove that avatar completely but there is no where to delete it. I looked in Customize and everywhere else. So I need a plugin that will let me move the content over and cover it or remove it altogether. Please help