How to show an <UL>? - css

Question

Situation, such a menu:
<ul class="top_right_menu">
<li class="top_right_submenu"><i class="fa fa-globe"></i> LANGUAGES</li>
<li>HELP</li>
<li>LOGIN</li>
</ul>
When I hover "LANGUAGES" I need to show up the other :
<ul class="hover_top_right_menu">
<li>ENGLISH</li>
<li>SPANISH</li>
<li>RUSSIAN</li>
<li>GERMAN</li>
</ul>
Necessary to make it work on CSS, JQuery or without JavaScript. Here's a version does not work:
.hover_top_right_menu {
    display: none;
}
It's a wrong line
.top_right_submenu: hover, hover_top_right_menu {
    display: visible;
}

Answer 1

You have some typos in your css
by default the element .hover_top_right_menu should have display: none. When you hover the submenu then you change its display (with display: block).
.hover_top_right_menu {
display: none;
}
.top_right_submenu:hover .hover_top_right_menu {
display: block;
}
Anyway this css is based on the assumption that the language list is nested into .hover_top_right_menu element, e.g.:
<ul class="top_right_menu">
<li class="top_right_submenu"><i class="fa fa-globe"></i> LANGUAGES
<ul class="hover_top_right_menu">
<li>ENGLISH</li>
<li>SPANISH</li>
<li>RUSSIAN</li>
<li>GERMAN</li>
</ul>
</li>
<li>HELP</li>
<li>LOGIN</li>
</ul>
As a side notes:
Unless you need to have an action on click event, the link around "LANGUAGES" is not necessary for the example
you're using empty markup, probably for styling purpose only. If you need to have an icon just place it as a background of that list-item (or as content property of its :before pseudoelement)