There is no generic way to achieve that with CSS.
If you can write a selector that matches both the element that is a member of the resize class and the element that is a member of the font_white class (which you would do using a combinator such as descendant, child or sibling) then you can use the combinator to achieve it.
For example:
.resize:hover ~ .font_white { ... }
would work if your HTML looked something like:
<button class="resize">Hover Me</button>
<section id="first">...</section>
<section id="second" class="font_white">...</section>
<section id="third" class="font_white">...</section>
You would need to select apropriate combinators for your particular HTML.