css grids grid-area code example
Example: unknown property grid-template-areas
.sidebar{
grid-area:sidebar;
background:aqua;
}
.grid_container{
display:grid;
grid-template-columns: 1fr 3fr;
grid-template-rows: 1fr 3fr;
grid-template-areas:
"sidebar ."
"sidebar .";
background:pink;
height:300px;
}