.header {
    display: flex;
    position: sticky;
}

.logo img {
    width: 320px;
    margin: 1em 5.5em 0.5em 5em;
}

.menu {
    position: absolute;
    top: 6.3em;
    right: 5em;
}

.menuLink {
    margin-right: 20px;
    text-decoration: none;
    color: black;
    padding-bottom: 10px;
}

.menuLink:hover {
    color: green;
    border-bottom: 3px solid #008000;
}

.menuMobile {
    display: none;
}

.hr {
    height: 10px;
    border: 0;
    box-shadow: 0 10px 10px -10px #333 inset;
    margin-bottom: 4em;
}

#mobileHr {
    display: none;
}

@media (max-width: 900px) {
    .menu {
        display: none;
    }
    
    .menuMobile {
        display: flex;
        justify-content: space-evenly;
        position: fixed;
        bottom: 0;
        right: 0;
        left: 0;
        background-color: white;
        height: 80px;
        border-top: 1px solid grey;
        align-items: center;
        z-index: 9999;
    }
    
    .menuMobile a:hover {
        color: #008000;
    }

    a {
        text-decoration: none;
        color: black;
    }
    
    .hr {
        margin-bottom: 0.5em;
    }
    
    #mobileHr {
        display: block;
        position: relative;
        top: 610px;
    }
}

@media (max-width: 600px) {
    .header {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .logo img {
        width: 100%;
        max-width: 200px;
        margin: 0;
    }
    
    .menu {
        position: static;
        margin-top: 1em;
        text-align: center;
    }
    
    .menuLink {
        display: block;
        margin: 10px 0;
    }
}