Show or Hide a Div with Responsive Design

Exploring responsive layouts is a new adventure for me. Most things seem to be falling into place, except for one challenge: I am struggling to show divs with the property 'display: none;' when switching it to 'display: block;' in my media query.

#test {
display: none;
}
@media screen and (max-width:320px) {
   #test {

      display: block;
   }
}

Could jQuery be the solution to this problem?

Answer №1

Your code may not behave as expected due to differences in specificity. The first rule has a specificity of 1 0 1, while the second rule has a specificity of 1 0 0.

To ensure your code works correctly, try using just #test instead of div#test. In cases where two rules have equal specificity, the last one declared takes precedence.

For more information on CSS specificity, check out these resources:

Answer №2

Your CSS selector for #test is incorrect:

div#test { display: none; }

@media screen and (max-width:320px) {
   div#test { display: block; }
}​

Here's a live demonstration: http://jsfiddle.net/kcwmq/

Answer №3

Utilize:

#example {
  visibility: hidden;
}

There is no need to specify div#example, as #example will always be unique on its own. Adding div#example would only marginally affect performance (we're talking maybe 0.000000000001s ;-) )

Example:
http://jsfiddle.net/abc123/

Answer №4

Great job on your code! You definitely don't require any jquery for this task. The test div will be displayed when the screen size is less than 320px, but if you prefer the opposite effect, use min-width instead. Check out this example for reference.

Answer №5

To make the div visible, your CSS needs to include the "Important" declaration

@media screen and (max-width:320px) {
  #test { block !important;}
}​

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