style.css

* {
    box-sizing: border-box;
}

.topnav {
    overflow: hidden;
    background-color: #333;
}

.topnav ul {
    text-align: center;
}

.topnav li {
    float: left;
    display: block;
    padding: 14px 16px;
}

.topnav a {
    text-decoration: none;
    color: #f2f2f2;

}

.topnav li:hover {
    background-color: #ddd;
}

.topnav a:hover {
    color: black;

}

img {
    border-radius: 50%;
}

header {
    text-align: center;
    margin-bottom: 5px;
}

.tentang {
    margin: 5%;
    text-align: center;
}

.kontak {
    margin: 5%;
    text-align: center;
}

/* Create three equal columns that floats next to each other */
.column {
    float: left;
    width: 33.33%;
    padding: 10px;
}

.row::after {
    content: "";
    display: table;
    clear: both;
}

@media screen and (max-width:600px) {
    .column {
        width: 100%;
    }
}

#laj:hover {
    cursor: pointer;
    font-size: 72pt;
}

footer p {
    text-align: center;
}