*{
    margin: 0;
    padding: 0;
}
html{
    height: 100%;
}
body{
    height: 100%;
    background-image: url("../img/bg.png");
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: cover;
}
.footer-box {
    position: fixed;
    bottom: 20px;
    left: 20px;
    background-color: rgba(0, 0, 0, 0.6);
    color: #fff;
    padding: 10px;
    border-radius: 5px;
}
.footer-box a {
    color: #fff;
    text-decoration: none;
}