body {
    margin: 0;
    background: darkgray;
    overflow: hidden;
    display: flex; /* Add this */
    justify-content: center; /* Add this */
    align-items: center; /* Add this */
}

#verticalButtons{
    display: flex;
    flex-direction: column;
}

button{
    border: none;
    border-radius: 5px;
    padding: 5px 5px 7px 5px;
    margin: 2px;
    cursor: pointer;
}

button:hover{
    background: blue;
}

#networkCanvas {
    background: black;
}

#carcanvas {
    background: lightgray;
}