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css-next & grid layout

css3

demo

https://alligator.io/

@media only screen and (max- 30em) {
    div.front-flex {
        grid-template-columns: 1fr;
    }
}

div.front-flex {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
}

service workers

refs

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