body {
    background-color: #000000;
    color: #ffffff;
}
h1 {
    font-size: 50px;
    margin: 0;
    padding: 0;
}
.centre {
    margin-top: 10%;
    text-align: center;
}
a {
    color: #ffffff;
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}
.footer {
    position: fixed;
    bottom: 0;
    width: 100%;
    height: 50px;
    text-align: center;
}
input {
    padding: 10px;

    border-radius: 5px;
    border: 1px solid #000000;
}
button {
    padding: 10px;
    border-radius: 5px;
    border: 1px solid #000000;
}
button:hover {
    background-color: #000000;
    color: #ffffff;
    border: 1px solid #ffffff;
}