How to Prevent Unintended Content Hiding in CSS: A Solution for the \':focus\' Problem

Hide/Show Content-List with CSS: Resolving Unintended Behavior

In pursuit of a solution to hide and show content using only CSS, a developer encountered an issue: the content could be hidden by clicking anywhere on the page, rather than just by clicking the designated "hide" link.

The developer's initial code used the following CSS:

<code class="css">#cont {display: none; }
.show:focus + .hide {display: inline; }
.show:focus + .hide + #cont {display: block;}</code>

This code successfully hides the content when the "hide" link is clicked. However, it also enables hiding by clicking any part of the page, because the CSS rule targets the ":focus" pseudo-class.

To resolve this issue, we can use the following updated CSS:

<code class="css">body {
  display: block;
}
.span3:focus ~ .alert {
  display: none;
}
.span2:focus ~ .alert {
  display: block;
}
.alert{display:none;}</code>

In this updated code, we use the "~" combinator to target elements that are siblings of the focused element. This means that the "hide" element (~ .alert) is only hidden when the "show" element is in focus.

The HTML remains the same:

<code class="html"><span class="span3">Hide Me</span>
<span class="span2">Show Me</span>
<p class="alert">Some alarming information here</p></code>

With this revised approach, the content is now only hidden when the "Hide Me" element is clicked, as the developer intended.

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