#grid {
display: grid;
width: 80%;
grid-template-columns: 50px 1fr;
}
#areaA {
background-color: lime;
}
#areaB {
background-color: yellow;
}
#grid {
display: grid;
width: 100%;
grid-template-columns: 50px 1fr;
}
#areaA {
background-color: lime;
}
#areaB {
background-color: yellow;
}