@mozai126

<title>JS Bin</title> <style> .wrapper{ display: grid; grid:auto auto auto/200px auto; }

header{
grid-column: 1/3;
grid-row: 1/2;
background:red;
}

aside{
grid-column: 1/2;
grid-row: 2/3;
background:blue;
}

main{
grid-column: 2/3;
grid-row: 2/3;
background:grey;
}

footer{
grid-column: 1/3;
grid-row: 3/4;
background:green;
}</style>

题目来自饥人谷