The grid CSS media feature can be used to test whether the output device uses a grid-based screen.
Most modern computers and smartphones have bitmap-based screens. Examples of grid-based devices include text-only terminals and basic phones with only one fixed font.
Syntax
The grid feature is specified as a <mq-boolean> value (0 or 1) representing whether or not the output device is grid-based.
Examples
HTML
<p class="unknown">I don't know if you're using a grid device. :-(</p> <p class="bitmap">You are using a bitmap device.</p> <p class="grid">You are using a grid device! Neato!</p>
CSS
:not(.unknown) {
color: lightgray;
}
@media (grid: 0) {
.unknown {
color: lightgray;
}
.bitmap {
color: red;
text-transform: uppercase;
}
}
@media (grid: 1) {
.unknown {
color: lightgray;
}
.grid {
color: black;
text-transform: uppercase;
}
}