Why is the logo not displayed on the site?

Question

caching

Hello, the logo has disappeared from the site, it is in the WordPress admin panel, but it is not displayed on the site. In the browser code, I saw a cache link (cache.skin.css?ver=1569266696 ) in its section, opening it, the following code came out:
#mega_main_menu .nav_logo
{
display: block;
vertical-align: top;
float: left;
position: relative;
z-index: 2100;
}
#mega_main_menu .nav_logo .logo_link
{
display: block;
padding: 0px 17px;
margin: 0px
vertical-align: middle;
position: relative;
z-index: 2100;
}
#mega_main_menu .nav_logo .logo_link img
{
max-height: 99%;
width: auto;
max-width: 100%
position: relative;
vertical-align: middle;
I can't understand, is the logo blocking me? tell me what's wrong, I've already cleaned everything, deleted the excess, but still nothing (

Answer 1

from here your site is very poorly visible, so it will be very difficult to answer correctly