Flexing your CSS muscles
Basics of using flexbox to style your site
For parents(flex container)
This sets-up the main-axis, by defining the direction flex items are placed in the flex container. Flexbox is a single-direction layout concept. Think of flex items as primarily laying out either in horizontal rows or vertical columns.
flex-direction: row | row-reverse | column | column-reverse;
row(default): left to right in
ltr; right to left in
row-reverse: right to left in
ltr; left to right in
column: same as
rowbut top to bottom
column-reverse: same as
row-reversebut bottom to top
Flex items will naturally try to fit into one line. You can change that and allow the items to wrap.
flex-wrap: nowrap | wrap | wrap-reverse;
nowrap(default): all flex items will be on one line
wrap: flex items will wrap onto multiple lines, from top to bottom.
wrap-reverse: flex items will wrap onto multiple lines from bottom to top.
This establishes the alignment along the main axis. It helps distribute extra free space leftover when either all the flex items on a line are inflexible, or are flexible but have reached their maximum size.
justify-content: flex-start | flex-end | center | space-between | space-around | space-evenly | start | end | left | right ... + safe | unsafe;
flex-start(default): items are packed toward the start of the flex-direction.
flex-end: items are packed toward the end of the flex-direction.
start: items are packed toward the start of the
end: items are packed toward the end of the
left: items are packed toward left edge of the container, unless that doesn’t make sense with the
flex-direction, then it behaves like
right: items are packed toward right edge of the container, unless that doesn’t make sense with the
flex-direction, then it behaves like
center: items are centered along the line
space-between: items are evenly distributed in the line; first item is on the start line, last item on the end line
space-around: items are evenly distributed in the line with equal space around them. Note that visually the spaces aren’t equal, since all the items have equal space on both sides. The first item will have one unit of space against the container edge, but two units of space between the next item because that next item has its own spacing that applies.
space-evenly: items are distributed so that the spacing between any two items (and the space to the edges) is equal.
Establishes the default behavior for how flex items are laid out along the cross axis on the current line. Think of it as the
justify-content version for the cross-axis.
align-items: stretch | flex-start | flex-end | center | baseline | first baseline | last baseline | start | end | self-start | self-end + ... safe | unsafe;
stretch(default): stretch to fill the container (still respect min-width/max-width)
self-start: items are placed at the start of the cross axis. The difference between these is subtle, and is about respecting the
flex-directionrules or the
self-end: items are placed at the end of the cross axis. The difference again is subtle and is about respecting
center: items are centered in the cross-axis
baseline: items are aligned such as their baselines align
This establishes the alignment along the cross axis. It helps distribute extra free space leftover when either all the flex items on a line are inflexible, or are flexible but have reached their maximum size.
align-content: flex-start | flex-end | center | space-between | space-around | space-evenly | stretch | start | end | baseline | first baseline | last baseline + ... safe | unsafe;
normal(default): items are packed in their default position as if no value was set.
start: items packed to the start of the container. The (more supported)
end: items packed to the end of the container. The (more support)
flex-directionwhile end honors the
center: items centered in the container
space-between: items evenly distributed; the first line is at the start of the container while the last one is at the end
space-around: items evenly distributed with equal space around each line
space-evenly: items are evenly distributed with equal space around them
stretch: lines stretch to take up the remaining space
For Children (flex items)
This dictates what amount of the available space inside the flex container the item should take up. If all of the items within the flex container are equal to 1, they will all be relatively equal in size. However, if one item has a value of 2, it will be twice the size of the adjoining items.
flex-grow: 4; /* default 0 */
This is the ability of an item to shrink based on items surrounding it.
flex-shrink: 3; /* default 1 */
This allows for the default alignment for a single item to be overridden
align-self: auto | flex-start | flex-end | center | baseline | stretch;
These are just a few of the ways you can flex your CSS muscles. For more information about flex box please visit
Basic concepts of flexbox
The Flexible Box Module, usually referred to as flexbox, was designed as a one-dimensional layout model, and as a…
Some content was sourced from CSS-Tricks.com & flexboxfroggy.com