style.css

body
{
    margin: 0;
    background: rgb(88, 88, 88);
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

#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: rgb(0, 0, 0);
}
#carCanvas
{
    background: rgb(150, 150, 150);
}