body {
    margin: 0;
}
#wrapper {
    display: grid;
    grid-template-columns: minmax(0px, 1fr) repeat(8, minmax(0, 150px)) minmax(0px, 1fr);
    grid-auto-rows: minmax(0, auto);
}

header {
    background-color: #E70000;
    grid-column: 1 / -1;
    grid-row: 1 / 2;
    height: 109px;
}

#hero {
    background-color: #00E709;
    grid-column: 1 / -1;
    grid-row: 2 / 3;
    height: 480px;
}

#about {
    background-color: #00E7E7;
    grid-column: 1 / -1;
    grid-row: 3 / 4;
    height: 90px;
}

#teacher {
    background-color: #2000e7;
    grid-column: 1 / -1;
    grid-row: 4 / 5;
    height: 54px;
}

main {
    background-color: #ff00e5;
    grid-column: 2 / -2;
    grid-row: 5 / 6;
    height: 946px;
}

footer {
    background-color: #c6e700;
    grid-column: 1 / -1;
    grid-row: 6 / 7;
    height: 81px;
}