There is something wrong with the website layout, please help me check it out. Thank you_html/css_WEB-ITnose

http://www.hf711.com/house/search.php
When the browser is zoomed out, the following content will cover the navigation bar content. Seeking a solution! ! !
My css is too bad, please help me take a look at it. Thank you

Reply to the discussion (solution)

1. The positioning of the element with id=header is left, top. There is something wrong with this place. If you use left and top positioning, you should confirm its relative positioning element. It seems that it is not defined in your code. You should add position:relative to the element with id=seachindex. Then add position:absolute to the header. Otherwise, According to your current code, the positioning of left top is based on the body element, so it goes to the top