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Responsive Web Design

One design. Many screens.

Responsive layouts automatically adjust and adapt to any device screen size, whether it is a desktop, a laptop, a tablet, or a mobile phone.

We can target the various sizes of these devices using media queries.

Media queries do not target a device, they target a screen size.

The @media rule does that like this:

div.example {
    background: red;
}

@media screen and (max-width: 600px) {
    div.example {
        background: blue;
    }
}

If we want to target a size range we would do something like this:

@media screen and (min-width: 600px) and (max-width: 900px) {
    div.example {
        background: yellow;
    }
}

Value	Description
all	Default. Used for all media type devices
print	Used for printers
screen	Used for computer screens, tablets, smart-phones etc.
speech	Used for screenreaders that “reads” the page out loud