.parent {
display: grid;
grid-template-columns: repeat(6, 1fr);
grid-template-rows: repeat(6, 1fr);
grid-column-gap: 5px;
grid-row-gap: 5px;
}
.div1 { grid-area: 1 / 1 / 2 / 7; }
.div2 { grid-area: 2 / 2 / 6 / 6; }
.div3 { grid-area: 6 / 2 / 7 / 6; }
.div4 { grid-area: 2 / 6 / 4 / 7; }
.div5 { grid-area: 4 / 6 / 6 / 7; }
.div6 { grid-area: 6 / 6 / 7 / 7; }
.div7 { grid-area: 2 / 1 / 6 / 2; }
.div8 { grid-area: 6 / 1 / 7 / 2; }