header {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 15px;
}


header div h2 {
    font-size: 175%;
    color: darkblue;
}

header div h3 {
    font-size: 130%;
    font-style: italic;
}

header img {
    width: 80px;
    /* or 100px depending on your design */
    height: auto;
    display: block;
}

header a {
    padding: 0;
}

body {
    background-image: url(../images/background.jpg);
    background-position: center;
    background-size: cover;
    background-blend-mode: multiply;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

body main {
    color: aqua;
    background-color: rgba(0, 0, 0, 0.512);
}

body main h3 {
    display: grid;
    place-items: center;
}

footer {
    color: aqua;
}

/* NAV MENU */
#nav_menu {
    border: 3px solid green;
    background-color: darkblue;
}

#mobilemenu {
    display: none;
}

#nav_menu ul {
    list-style-type: none;
    position: relative;
    display: flex;
    justify-content: center;
    gap: 20px;
}

#nav_menu li {
    width: auto;
}

#nav_menu a {
    display: block;
    color: green;
    background-color: darkblue;
    text-align: center;
    padding: .7em 0;
    font-weight: bold;
    text-decoration: none;
    transition: all ease-in-out 600ms;
}

#nav_menu ul ul {
    display: none;
    position: absolute;
    top: 100%;
    width: 100%;
}

#nav_menu ul ul li a {
    text-align: left;
    padding-left: .25em;
}

#nav_menu ul li:hover>ul {
    display: block;
}

#nav_menu a:hover {
    color: black;
    background-color: lightsteelblue;
}

/* NAV LIST */

/* MEDIA QUERY */

@media (max-width: 767px) {
    #nav_menu {
        display: none;
    }

    #mobilemenu {
        display: block;
    }
}