h1{
    width: 100%;
    border-collapse: collapse;
    text-align: center;
    color: white;
}

table{
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    font-size: 18px;
    text-align: center;
    color: white;
    border: 1px solid white;
}
html,body{
    height: 100%;
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background-color: gray;
}