body {
    margin: 0;
    padding: 0;
}

#main-header {
    background-color: cyan;
}

#page-buttons button {
    background-color: cyan;
    white-space: nowrap;
    width:auto;
    border-color: transparent;
}

.nav-button {
    display: block;
    text-decoration: none;
    color:black;
    font-weight: bold;
    cursor: pointer;

    border: 0;
    border-bottom: 5px solid transparent;

    transition: border-color 0.2s ease;
}

.nav-button:hover{
    color: black;
    border-bottom-color: black;
}