body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
}

header {
    background-color: #fff;
    color: #000000;
    padding: 10px 0;
    text-align: center;
    font-size: small;
}


.banner {
    background-color: black;
    text-align: center;
    padding: unset;
    
}

.banner img {
    width: 55%;
    height: auto;
}

.content {
    text-align: center;
    margin-top: 3em;
    margin-bottom: 10em;
}

.content p {
    font-size: larger;
    font-weight: 500;
    color: #333;
    margin: 20px;
}

footer {
    background-color: #000000;
    color: #fff;
    text-align: center;
    padding: 10px 0;
    width: 100%;
    bottom: 0;
}

@media screen and (max-width: 600px)  {
    .header {
        padding: 0px 0px;
    }
    
    .banner {
        background-color: unset;
        padding: unset;
    }
    
    .banner img {
        width: 100%;
        height: auto;
    }

    .content {
        margin-top: 1em;
        margin-bottom: 5em;
    }

    footer {
        position: fixed;
    }
}