Can CSS Affect One Element's Opacity When Hovering Over a Different Element?

Can Elements Influence Each Other When Hovering over Different Elements?

Problem:

The goal is to modify the opacity of one element (#thisElement) by hovering over another (img) without utilizing JavaScript.

Desired Functionality:

When hovering over 'img', the opacity of 'img' should increase to 100%, while the opacity of '#thisElement' should decrease to 30%.

CSS Limitations:

Unfortunately, CSS alone cannot achieve this effect because it lacks the capability to apply styles to an element based on the hovering of a different element.

Options for Affecting Neighboring Elements:

However, CSS can alter the style of elements related to the hovered element:

• Descendants: Apply styles to child or nested elements. Example:

  #parent_element:hover #child_element {
    opacity: 0.3;
  }

• Adjacent Siblings: Affect elements immediately following or preceding the hovered element. Example:

  #first_sibling:hover + #second_sibling {
    opacity: 0.3;
  }

Proposed Solution:

Based on the given HTML structure, where 'img' has siblings immediately below it without nesting, you can utilize the adjacent sibling selector:

img:hover + img {
    opacity: 0.3;
    color: red;
}

This CSS rule will adjust the opacity of the 'img' elements adjacent to the hovered 'img' element.

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