* {
    font-family: Arial, Helvetica, sans-serif;
}
body {
    margin: 0;
    background-color: white;
    height: 2000px;
}
footer {
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: white;
    overflow: hidden;
    clear: both;
    height: 100px;
}

.shadow-left-right {
    box-shadow: -8px 0 10px -6px black,
                8px 0 10px -6px black;
}

.no-margin {
    margin: 0;
}