:root{
    --light-tint: hsl(0, 100%, 100%);
    --dark-tint: hsl(0, 100%, 0%);
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Courier New', Courier, monospace;
    font-optical-sizing: auto;
    font-weight: 300;
    font-size: 1rem;
}
a:visited, a:link, a:hover{
    color: var(--light-tint);
    text-decoration: underline;
} 
.cell{
    display: flex;
    justify-content:center;
    align-items: center;
    width: 50%;
    height: 100%;
}
.cell-light {
    background-color: var(--light-tint);
    color: var(--dark-tint);
}
.cell-dark {
    background-color: var(--dark-tint);
    color: var(--light-tint);
}
#checkerboard {
    display: flex;
    flex-wrap: wrap;
    width: 100svw;
    height: 100svh;
}
.row {
    display: flex;
    height: 50%;
    width: 100%;
}