.box {
    max-width: 900px;
    margin: 20px auto;
    position: relative; 
    top: 70px;
    display: grid;
    grid-gap: 100px;
}

header {
    grid-row: 1 / 2;
    grid-column: 1 / 2 ;
    height: 90px;
    font-family: 'bansyu-retoromin'; 
    -webkit-text-stroke: 0.3px black;
    font-size: 3.5em; 
    text-align: center;
}

main {
    grid-row: 2 / 3 ;
    grid-column: 1 / 2;
    background-image: url(images/notebook.png);
    max-height: fit-content;
    overflow-y: visible;
}