Discovering MaterialUI breakpoints within CSS styling

Working on a create-react-app project, I have incorporated material-ui 1.x and customized the theme with unique breakpoints...

import {  createMuiTheme } from '@material-ui/core/styles';
let customTheme = createMuiTheme({
  breakpoints:{
    values:{
      xs: 0,
      sm: 600,
      md: 960,
      lg: 1280,
      xl: 1920
    }
  }
});
export default customTheme;

I am wondering if it's feasible to utilize these breakpoints within a .css file. Specifically, in a layout component where media queries are utilized...

...
@media screen
 and (max-width: 850px) and (min-width: 640px){  /* <--- HERE   */
    .layout-content {
        grid-template-columns: 1fr 200px 200px 200px 1fr;
        grid-template-rows: 64px 
                        auto
                        1fr
                        auto;
        grid-template-areas: "h h h h h"
                             ". l m m ."
                             ". r m m ."
                             "f f f f f";
    }
}
...

Is there a way to access the values for these css media queries directly from the materail-ui theme object?

Answer №1

After some exploration, I delved deep into the world of react material-ui (https://material-ui.com) which heavily incorporates CSS-in-JS. If you opt to work with this framework, converting your CSS to JSS and tapping into the material-ui theme object for media breakpoints is the way to go. The snippet of CSS code now takes on a new form like so:

 [theme.breakpoints.only('sm')]:{
    layoutContent: {
      gridTemplateColumns: '1fr 200px 200px 200px 1fr',
      gridTemplateRows:`64px
                        auto
                        1fr
                        auto`,
      gridTemplateAreas: `"h h h h h"
                          ". l m m ."
                          ". r m m ."
                          "f f f f f"`,
    }
  },

It's worth noting that this has transitioned from CSS to JSON format.

Answer №2

For those focusing solely on modern browser compatibility, consider the potential use of CSS custom variables. These can be defined in JavaScript with the following code snippet:

for (key in breakpoints.values) {
    document.body.style.setProperty(
        "--theme-breakpoint-" + key,
        breakpoint.values[key] + "px"
    );
}

Subsequently, these custom variables can be referenced within CSS rules like so:

.some-class {
    min-width: var(--theme-breakpoint-sm);
}

Keep in mind that custom properties cannot currently be utilized directly within media queries. In cases such as the one outlined above, adjustments to the layout and styling may be necessary. Understanding the entirety of the design and styling process is crucial for determining the feasibility of such adaptations.

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