Hello,
1/ & 2/ https://prnt.sc/l0TsGtOCals4 – we have improved your css in Theme Options -> Theme Custom CSS -> Global CSS
6/
We can propose you next css
.et_b_header-menu #menu-item-17741 .nav-sublist-dropdown:not(.nav-sublist) {
left: auto;
right: 0;
}
The result will be next -> https://gyazo.com/aa977d992abf735551cc1edcd0f67664
if you want to make it for all menu items then use next css
.et_b_header-menu .nav-sublist-dropdown:not(.nav-sublist) {
left: auto;
right: 0;
}
The result will be next -> https://gyazo.com/f1b33f835a55f162bbee16db65aa2f3d
If you want to get another result then please, provide us details what do you want to have and we will answer you if it is possible to make.
New query answer
Use next html snippet to make load popup from any area you would like to
<div class="et-popup_toggle" data-type="newsletter" data-popup-on="click">
<span class="et-toggle button pointer">
Button
</span>
</div>
Result -> https://prnt.sc/-DaUYjYlcJ8F -> https://gyazo.com/bb004a6f3e72889fa415bd15dfe1b7af
Regards
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