Define layout areas in CSS Grid with grid-template-areas for a more readable layout structure.
Source Code
.grid-container {
display: grid;
grid-template-areas:
'header header header'
'nav content sidebar'
'footer footer footer';
grid-gap: 10px;
}
.header { grid-area: header; }
.nav { grid-area: nav; }
.content { grid-area: content; }
.sidebar { grid-area: sidebar; }
.footer { grid-area: footer; }