nav a {
    display: inline-block;
    width: 60px; /* Adjust the width as needed */
    text-align: center;
}
nav a:hover {
    font-weight: bold;
}
h1 {
    font-size: xx-large;
    font-weight: bold;
}
book a {
    display: inline-block;
    width: 100px;
}
book a:hover {
    font-weight: bold;
}
main {
    background-color: rgb(242, 242, 242);
}