This animation shows what the options look like: Source: Scott Domes Here are the most common options used to align items: flex-start | flex-end | center | baseline | stretchįor stretch to work how you would expect, the height of the elements must be set to auto instead of a specific height. This allows content to be positioned in many different ways using justify content and align items together. Flex Align ItemsĪlign-items allows us to align items along the cross axis (see terminology diagram above). space-around is similar but items have a half-size space on either end. Space-between distributes items so that the first item is flush with the start and the last is flush with the end. Here is what the different options look like: Source: Scott Domes Here are our the most common options used to justify content: flex-start | flex-end | center | space-between | space-around. It allows us to fill any empty space on rows and define how we want to ‘justify’ it. This changes depending on how content is displayed. Justify-content is a property to align items in the container along the main axis (see terminology diagram above). You can also set flex-direction to row-reverse and column-reverse. The animation below shows what happens when flex-direction: column is added to the container element. The default arrangement after applying display: flex is for the items to be arranged along the main axis from left to right. Do you want them left to right, right to left, top to bottom, or bottom to top? You can do all of these easily by setting the flex-direction of the container. Source: Scott Domes Flex Directionįlex-direction allows you to control how the items in the container display. This will initialize this container as a flex container and apply some default flex properties. To use flexbox on a section of your page, first convert the parent container to a flex container by adding display: flex to the CSS of the parent container. Here is an example of four colored divs in a parent div with the default display setting: Source: Scott Domes An element with this display setting takes up the full width of the line it is on. The cross size property is whichever of ‘width’ or ‘height’ that is in the cross dimension.ĭisplay: flex is tells your browser, "I wanna use flexbox with this container, please."Ī div element defaults to display:block. cross size: The width or height of a flex item, whichever is in the cross dimension, is the item's cross size.cross-start | cross-end: Flex lines are filled with items and placed into the container starting on the cross-start side of the flex container and going toward the cross-end side.Its direction depends on the main axis direction. cross axis: The axis perpendicular to the main axis is called the cross axis.Its main size property is thus either its width or height property, whichever is in the main dimension. main size: The width or height of a flex container or flex item, whichever is in the main dimension, is that box’s main size.main-start | main-end: The flex items are placed within the container starting on the main-start side and going toward the main-end side.The direction is based on the flex-direction property. main-axis: The main axis of a flex container is the primary axis along which flex items are laid out.Here are definitions of the key flexbox terms, taken from the official W3C specification for flexbox. Justify-content: flex-start | flex-end | center | space-between | space-around Īlign-items: flex-start | flex-end | center | baseline | stretch Īlign-content: flex-start | flex-end | center | space-between | space-around | stretch CSS that can be applied to items/elements in the container order: Īlign-self: auto | flex-start | flex-end | center | baseline | stretch Terminology Flexbox terminology diagram from official W3C specification.īefore you learn what the flexbox properties do, it's important to understand the associated terminology. CSS that can be applied to the container display: flexbox | inline-flex įlex-direction: row | row-reverse | column | column-reverse Here is a list of all the CSS flexbox properties that can be used to position elements in CSS. The article includes helpful animated gifs from Scott Domes which will make flexbox even easier to understand and visualize. By the end of this guide, you'll be ready to start using flexbox in your web projects. It's easy to learn, is supported in all modern browsers, and it doesn't take that long to figure out the basics. It makes responsive design easier.ĬSS flexbox is great to use for the general layout of your website or app. Items will "flex" to different sizes to fill the space. Flexbox makes it simple to align items vertically and horizontally using rows and columns. This comprehensive CSS flexbox cheatsheet will cover everything you need to know to start using flexbox in your web projects.ĬSS flexbox layout allows you to easily format HTML.
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