body {
    font-family: "Segoe UI", Tahoma, Verdana, sans-serif;
    color: #222222;
}

h1, h2, h3, h4 {
    text-align: center;
    margin: 19px auto;
}

h1 {
    color: #ff0000;
}

h2, h3, h4 {
    color: #0000ff;
}

p {
    text-align: justify;
    margin: 13px;
}

table {
    margin: 16px auto;
    text-align: left;
}

ul {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 16px auto;
    max-width: 980px;
    
}
ul li a {
    background-color: #000000;
    color: #ffffff;
    border-radius: 10px;
    
}



form {
    margin: 16px auto;
    max-width: 760px;
}