Grid Layoutを用いてresponsiveをやる

code:css

.cssgrid {

display: grid;

grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));

grid-auto-rows: 1fr;

grid-gap: 0.8em;

padding: 0.8em;

margin: 0 0 2em;

}

.cssgrid > div {

overflow: auto;

min-width: 0;

padding: 1em;

}