main {
    display: grid;
    /* sets up the layout of the grid */
    grid-template-areas:
        "heading heading heading heading"
        "hero hero hero hero"
        "art1 art2 art3 art4"
        "footer footer footer footer";
    /* sets up the size of the rows */
    grid-template-rows: auto auto 300px auto;
    
    /* sets up the size of the columns */
    grid-template-columns: auto auto auto auto;

    margin-left: 10%;
    margin-right: 10%;

    column-gap: 10px;
    row-gap: 20px;
}

h1 {
    grid-area: heading;
    text-align: center;
}

img {
    grid-area: hero;
    height: 100%;
    object-fit: cover;
    margin-left: auto;
    margin-right: auto;
}

div {
    display: flex;
    justify-content: center;
}

#va {
    grid-area: va;
  bottom: 10;
  height: 400px;
  margin-top: 50px;
}

#vb {
    grid-area: vb;
  bottom: 0;
  height: 500px;
}

#vc {
    grid-area: vc;
  bottom: 10;
  height: 400px;
  margin-top: 50px;
}

#art1 {
    grid-area: art1;
}

#art2 {
    grid-area: art2;
}

#art3 {
    grid-area: art3;
}

#art4 {
    grid-area: art4;
}

footer {
    grid-area: footer;
    text-align: center;
}

main > * {
    border: 1px solid black;
}

body {
    align-content: center;
}

/* Style the video: 100% width and height to cover the entire window */