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CSS Flex Responsive


Responsive Flexbox

You learned from the Media Queries chapter that you can use media queries to create different layouts for different screen sizes and devices.

Laptop and Desktops:

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Mobile phones and Tablets:

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For example, if you want to create a two-column layout for most screen sizes, and a one-column layout for small screen sizes (such as phones and tablets), you can change the flex-direction from row to column at a specific breakpoint (800px in the example below):

Example

.flex-container {
  display: flex;
  flex-direction: row;
}

/* Responsive layout - makes a one column layout instead of a two-column layout */
@media (max-width: 800px) {
  .flex-container {
    flex-direction: column;
  }
}

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Another way is to change the percentage of the flex property of the flex items to create different layouts for different screen sizes. Note that we also have to include flex-wrap: wrap; on the flex container for this example to work:

Example

.flex-container {
  display: flex;
  flex-wrap: wrap;
}

.flex-item-left {
  flex: 50%;
}

.flex-item-right {
  flex: 50%;
}

/* Responsive layout - makes a one column layout instead of a two-column layout */
@media (max-width: 800px) {
  .flex-item-right, .flex-item-left {
    flex: 100%;
  }
}

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Responsive Image Gallery using Flexbox

Use flexbox to create a responsive image gallery that varies between four, two or full-width images, depending on screen size:

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Responsive Website using Flexbox

Use flexbox to create a responsive website, containing a flexible navigation bar and flexible content:

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CSS Flexbox Properties

The following table lists the CSS properties used with flexbox:

Property Description
display Specifies the type of box used for an HTML element
flex-direction Specifies the direction of the flexible items inside a flex container
justify-content Horizontally aligns the flex items when the items do not use all available space on the main-axis
align-items Vertically aligns the flex items when the items do not use all available space on the cross-axis
flex-wrap Specifies whether the flex items should wrap or not, if there is not enough room for them on one flex line
align-content Modifies the behavior of the flex-wrap property. It is similar to align-items, but instead of aligning flex items, it aligns flex lines
flex-flow A shorthand property for flex-direction and flex-wrap
order Specifies the order of a flexible item relative to the rest of the flex items inside the same container
align-self Used on flex items. Overrides the container's align-items property
flex A shorthand property for the flex-grow, flex-shrink, and the flex-basis properties