/*remove details button and markers*/
details.menu summary{
    display: none;
}
details.menu summary::-webkit-details-marker {
    display: none;
}

details.menu nav ul {
    list-style-type: none;
    padding: 0;

    display: flex;
    flex-direction: row;
    justify-content: center;
}
details.menu nav li {
    list-style-type: none;
    padding: 0;
    margin: 0;

    flex: 1;
    display: inline;
}

details.menu nav a{
    display: block;
    text-align: center;
    text-decoration: none;

    border-width: 2px;
    border-style: outset;
    padding: 0.2em;
}
/*touch screen effects*/
@media (hover: none) {
    #header a:active {
        transform: translate(2px, 2px);
        border-width: 2px;
        border-style: inset;
    }
}
/*pointer screen effects*/
@media (hover :hover) and (pointer: fine) {
    #header a:hover{
        transform: translate(2px, 2px);
        border-width: 2px;
        border-style: inset;
    }
}