In my experience, when trying to utilize Material-UI(React) Button alongside CSS, the functionality of "select all immediate children" appears to be ineffective

Here is the HTML code in question:

<div className="button-container">
  <Button variant="contained">
        Default
  </Button>
  <Button variant="contained" color="primary">
        Primary
  </Button>
  <Button variant="contained" color="secondary">
        Secondary
  </Button>
</div>

I attempted to add margin to all direct children of button-container using CSS, but it didn't work as expected.

.button-container > *{
    margin: 8px;
}

However, when I specifically targeted the Button components inside the button-container, it worked as intended.

.button-container > Button{
    margin: 8px;
}

I'm now wondering if this issue is related to my syntax or if it could be a compatibility problem with JSX/React.

Answer №1

.button-container > *{
    margin: 8px;
}

The code above targets all the child elements of the button-container class, applying the specified CSS to all buttons.

.button-container > Button{
    margin: 8px;
}

This code specifically selects the children of the button-container class with the tag name Button.

In both cases, the expected CSS should be applied. If not, adding !important may help due to selector specificity. Check out the codesandbox link below for reference -

https://codesandbox.io/s/material-demo-khtqg?fontsize=14&hidenavigation=1&theme=dark

An alternative to using !important is to increase specificity in your CSS selector. For example, if you have a root div element with id #root, you can modify the CSS as follows -

#root .button-container > * {
  margin: 30px;
}

In your situation, another selector might be overriding your CSS. By increasing specificity, you can prioritize your selector over others. Learn more about CSS specificity here

Answer №2

The selector you have chosen is too broad, making it susceptible to being overridden by another selector. One effective (although not ideal) solution is to use the !important declaration, but it is generally recommended to avoid this practice.

For more information on when to use !important, you can refer to this resource Stephen P provided additional insight in his comment regarding this topic.

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