<style>
#grid {
    display: grid;
    grid-template-columns:
        auto
        1fr;
    grid-template-rows:
        auto
        auto;
}

#title {
    grid-column: 1;
    grid-row: 1;
    background-color: lightblue;
}

#board {
    grid-column: 2;
    grid-row: 1;
    background-color: lightgreen;
}
</style><div id="grid"><div id="title">Game Title</div><div id="board">Board</div></div>