body {
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}
nav {
    background-color: greenyellow;
}

.saya {
    display: flex;
    justify-content: space-evenly;
    border: 1px solid black;
}


img {
    display: block;
    margin-left: auto;
    margin-right: auto;
}