Help with website

Began to break down the entire site, found the cause in the css code
to swear at
float: right;
float: left;
when they removed the website is aligned with them to break up is all the rules without me doing the website. I can not understand because was to break down the website.
blocks:
The sequence of operations when washing Windows;
HOW WE WORK;

tell me where I'm missing the error
website: https://territoriychistihokon.ru/