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Breakpoint-based Media Queries

Media Queries apply different styles based on Breakpoints, which are conditions related to screen size.

A Breakpoint is a term used in responsive web design to represent the inflection points of screen sizes where the web page layout needs to change.


Common Breakpoint Values​

You can freely set breakpoints for each project, but commonly used breakpoint values are as follows.

  • Extra small devices: < 576px (mobile phones)

  • Small devices: ≥ 576px (mobile phones in landscape mode, tablets in portrait mode)

  • Medium devices: ≥ 768px (tablets in landscape mode)

  • Large devices: ≥ 992px (desktops)

  • Extra large devices: ≥ 1200px (large desktops)


How Do You Use Breakpoint Media Queries?​

You can specify breakpoints using the @media rule in CSS with min-width and max-width, and define CSS styles that only apply under specific screen conditions.

CSS
/* Default style */
.container {
  width: 100%;
}

/* Style for screen widths of 768px and above */
@media (min-width: 768px) {
  .container {
    width: 750px;
  }
}

/* Style for screen widths of 992px and below */
@media (max-width: 992px) {
  .container {
    width: 970px;
  }
}

/* Style for screen widths between 1200px and 1920px */
@media (min-width: 1200px) and (max-width: 1920px) {
  .container {
    width: 1170px;
  }
}

Adjust the width of the Code Execution Result screen on the right displaying boxes A, B, C, and observe how the Media Queries apply according to the Breakpoints.

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