body{

    font-family: sans-serif;
}

/* MOT(S) */

#words{

    font-size: 10vw;
    text-align: center;
    padding-top: 30vh;
    height: 100vh;

    transition: background 1s, color 1s;
}

/* BUTTON */

#button{
    
    position: fixed;
    right: 16px;
    bottom: 16px;
    display: inline-block;
    padding: 12px;
    background: blue;
    color: white;
    border-radius: 24px;
 }

#button:hover{
    
    cursor: pointer;
    background: magenta;
}

/* ÉTATS */
/* Jour */

.day #words{
    
    background: white;
    color: black;
}

/* Nuit */

.night #words{
    
    background: black;
    color: white;
}