tomaja

Yep, just like @Thimothe said, u can use

#main-wrapper {
background: none;
}

If you want to do the same with main menu

#rtp-primary-menu {
background-color: none;
border: none;
}

Of course, that would likely lead you to some link color modifications.

Check your custom css field, have you make any css modifications there ?
You could also try to add

.navbar .nav > li > a {
position: static;
}

to see if it makes any good for your menu

You need to remove specific css for those two menu item links (menu-item-34 and menu-item-74), so find and remove next three lines, or at least make that top 0 px:

top: 1px !important;
left: 0px !important;
position: relative !important;

Simply remove or rename your childs theme functions.php and create new one.

Sorry, you have to install Jetpack plugin for this option.Then you just need to expand that Facebook or any other widget or custom text in the footer area where you put it, press “Visibility” button and set it to be “shown” when “page” is “front page”
Instead Jetpack you could use another plugin

The easiest way is to place that box in the footer area, and then you can set visibility options for it, e.g to choose showing that box only on front page.

You can try this snippet

Link to your logo points to localhost, so I guess you need to check settings and URLs in wp admin area, e.g yoursite.com/wp-admin/options-general