Does the layout of the blog fall apart when adding materials?

Question

Joomla

Hello. When adding articles, the entire blog page falls apart on the desktop. Do not understand why. The articles look ok, but the main one doesn't. Moreover, the demo material looks perfect on the first page, but not with my articles. dk.kb-net.ru/index.php/blog

Answer 1

Add style
.article-introtext iframe {max-width: 100%}