body {
    background-color: black;
}
h1 {
font-size: 5rem;
font-family: sans-serif;
color: white;
text-align: center;
}
button {
    font-size: 3rem;
    font-family: sans-serif;
    color: white;
    margin-left: auto;
    margin-right: auto;
    display:  block;
    background-color: black;
    }
h2 {
    font-size: 3rem;
    font-family: sans-serif;
    color: white;
    text-align: center;
    }
.jari {
    height: 50vh;
margin-left: auto;
margin-right: auto;
display:  block;
}

h5 {
    font-size: 1rem;
    text-align: center;
    color: white;
font-family: sans-serif;
}
dark {
    margin-left: auto;
    margin-right: auto;
    display:  block;
}
p {
    color: white;
    font-family: sans-serif;
    text-align: center;
}
li {
    cursor:pointer;
    transition: background-color 0.3ms; 
    text-decoration: none;
}
li:hover {
    color:blueviolet;
    border-color: darkviolet;
}