html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    width: 100%;
}

body {
    display: flex;
    flex-direction: column;
    background-color: #f0f0f0; /* Or any background color you prefer */
}

.top-nav {
    width: 100%;
}

.main {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.container {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

footer {
    width: 100%;
}