PWA stands for Progressive Web Application, which operates on web and mobile devices. It combines the best features of websites and mobile applications. It provides a better user experience by offering the following features:
Like other native apps, can be installed on users’ devices
Provides offline access
Normally has fast loading times
Has responsive designs to adapt to different screen sizes
Is engaging because notifications can be pushed to the users
Since the key feature of PWAs is their ability to operate on different devices, they must be responsive to incorporating different screen sizes. For this, fluid grid layout comes in handy.
The fluid grid layout is a design approach used in web development and responsive designs. Its main purpose is to create visually optimal layouts that adapt to the screen size, whether accessed on a large desktop screen, smartphone device, or tablet.
In fluid grids, the columns and content areas take up the percentage of the available width instead of fixed pixel values. Moreover, developers use media queries to add breakpoints to ensure an optimized user experience by adjusting elements that need to be changed in order to fit the screen size.
The following code snippet uses the CSS file to show how a fluid layout works. Run the code to see the images being displayed in a desktop layout in the output:
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ou5936jrDNvROwfD9k60f9h2xf2Pzrj/MQCN69fET0Amdi/E/l+X9lz0Dsdc7S4Pmb0rMJQDOxwUASEGZsoMEKa00yXCIEpZt0+Uwo4nL8VdX4o73xDAJyImTqpuCWERUZBeABmUY3imQeHSAAAAAElFTkSuQmCC
Run the code and click the arrow on the top right corner of the output window to see the output in a new tab. Here, we can test the responsiveness by varying the browser window size.
Since the fluid grid layout mainly depends on the CSS file (App.css in our case), we will focus on it.
Line 23: CSS Grid is defined for the grid-container class that creates a responsive grid and adjusts the content inside it according to the available width of the screen.
Media Queries are defined as breakpoints to apply different styles at different screen widths.
Line 29: @media(min-width: 576px) addresses screen sizes with the minimum depth of
Line 35: @media(min-width: 768px) targets screen sizes with the minimum width of
Line 41: @media(min-width: 992px) addresses screen sizes with the minimum depth of
Both of these CSS elements contribute to adapting the overall layout’s appearance, dynamically adjusting columns based on the screen width, thereby achieving a responsive design.
In summary, the fluid grid layout helps create flexible and adaptable layouts to fit the available width of the device’s screen. It provides a better user experience whether the app is accessed on a web platform or a smartphone screen.
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