body {
    background-color: #595959; 
    color: #ffffff; 
    margin:0px; 
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    line-height: 1.5;
}

a {
    color: #00e;
    text-decoration: none;
}

header {
    background-color: #4C4C4C;
    padding:5px 50px 10px;
    position: sticky;
    top: 0px;
    left: 0px;
    right: 0px;
}


header a {
    margin: 0px;
    font-size: 30px;
    color: #ffffff;
    text-decoration: none;
}

main {
    margin: 0px auto;
    width: auto;
    height: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 100;
    flex-direction: column;
    text-align: left;
}

footer {
    background-color: #4C4C4C;
    padding:5px 50px 10px;
    position: absolute;
    bottom: 0px;
    left: 0px;
    right: 0px;
}