body{
    background: #000;
    color: #0000000;
    transition: background-color 5s;
}

p{
    color: #000000;
}

.box{
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

#footer{
    position: fixed;
    text-align: center;
    bottom: 0px;
    width: 100%;
}