CSS that relies on the presence of a specific class

I'm a CSS novice and I have encountered a scenario where I need to apply a CSS class only when another class is not present.

<div
      class="border-solid p-2 bg-white mt-1 h-fit"
      [ngClass]="SOME_CONDITION ? 'tile-container' : ''"
    >
      <div class='chart-container'>
          <app-angular-component></app-angular-component>
      </div>
    </div>
    

If the tile-container class is present, then the chart-container class should not be applied. Vice versa, if the tile-container class is not present, then the chart-container class should be applied.

I am looking to achieve this using just CSS.

This seems like a common issue, but I haven't been able to find a specific answer that fits my current scenario.

How can I accomplish this?

Answer №1

If you want to implement conditional styling in your CSS, you can utilize the CSS sibling combinator (~) and the :not() pseudo-class selector.

<style>
  .chart-container {
  /* Define your chart-container styles here */
 }

 .tile-container {
   /* Define your tile-container styles here */
 }

 .chart-container:not(.tile-container) ~ .chart-container {
   /* Apply chart-container class only when tile-container class is not present, and vice versa */
/* Feel free to add any additional styles as needed */
 }
</style>

<div class="border-solid p-2 bg-white mt-1 h-fit">
  <div class="chart-container">
    <app-angular-component></app-angular-component>
  </div>
 </div>

The 'chart-container:not(.tile-container) ~ .chart-container' selector in the code above targets elements with the chart-container class that are not preceded by the tile-container class. This approach ensures that when the tile-container class is present, the chart-container class will not be applied, and vice versa.

Answer №2

If you are looking to customize the styling, you will need to overwrite all styles of .chart-container within .tile-container like this:

.chart-container{
  padding : 15px;
}

.tile-container .chart-container{
  padding : 30px !important;
}

By doing this, the CSS from the tile container will take precedence due to its higher specificity.

Alternatively, you can use the following approach:

<div
  class="border-solid p-2 bg-white mt-1 h-fit">
  <div [ngClass]="SOME_CONDITION ? 'tile-container' : 'chart-container'">
      <app-angualar-component></app-angualar-component>
  </div>
</div>

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