A while back we made a list of animated gifs explaining the basic
principles of responsive web design. The post was extremely popular. It
turns we were not the only ones who find it difficult to explain what
makes the web responsive. Today we are releasing a video, explaining few
of the principles with some real examples.
As screen sizes become smaller, content starts to take up more
vertical space and anything below will be pushed down, it’s called the
flow. That might be tricky to grasp if you are used to design with
pixels and points, but makes total sense when you get used to it.
The canvas can be a desktop, mobile screen or anything in between.
Pixel density can also vary, so we need units that are flexible and
work everywhere. That’s where relative units like percents come in
handy. So making something 50% wide means it will always take half of
the screen (or viewport, which is the size of the opened browser
Breakpoints allow the layout to change at predefined points, i.e.
having 3 columns on a desktop, but only 1 column on a mobile device.
Most CSS properties can be changed from one breakpoint to another.
Usually where you put one depends on the content. If a sentence breaks,
you might need to add a breakpoint. But use them with caution — it can
get messy quickly when it’s difficult to understand what is influencing
Max and Min values
Sometimes it’s great that content takes up the whole width of a screen, like on a mobile device, but having the same content stretching to the whole width of your TV screen often makes less sense. This is why Min/Max values help. For example having width of 100% and Max width of 1000px would mean that content will fill the screen, but don’t go over 1000px.
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