Opencart how to change the output of the left menu and content in another div in the template?

Question

opencart

maaaaaaan.temp.swtest.ru/index.php?route=product/p...
Opencart how to change the output of the left menu and content in another div in the template.
Now id="column-left" and id="content" are displayed next to id="notification", in the parent id="container".
how to make id="column-left" and id="content" output in another div?
it is necessary to make the background of the same color for both the menu and the content, and the header was not affected.

Answer 1

honestly tried to find the answer in the documentation, but did not work. eventually climbed himself. found that id="column-left" and id="content" are output to id="container" only because the tag is not closed. Accordingly, I added another unclosed div, as a result, id="column-left" and id="content" began to be displayed in it.