.header {
    position: fixed;
    top: -10px;
    left: 0;
    right: 0;
    background-color: white;
    box-shadow: 0px 2px 5px rgba(0, 0, 0, 0.2);
    z-index: 50;
}

.header-container {
    width: 88%;
    margin: auto;
}

.logo_img {
    display: inline-block;
    width: 120px;
    height: 50px;
}

.nav-menu {
    float: right;
    padding: 0;

}

.nav-menu ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: inline-block;
}

.nav-menu li {
    display: inline-block;
        margin: 5px auto; 

}

.nav-menu a {
    display: block;
    text-decoration: none;
    color: black;
    font-family: 'Open Sans', sans-serif;
    font-size: 14px;
    font-weight: 400;
    padding: 10px;
    transition: background-color 0.3s ease-in-out;
    margin: 0 0;
}

.nav-menu a:hover {
    background-color: #333;
    color: #fff;
}

.nav-menu a.active {
    background-color: #333;
    color: #fff;
}

.section {
    height: auto;
    padding: 50px;
    margin: 32px auto;
}


nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

li {
    margin-right: 1rem;
}

a {
    color: #337ab7;
    text-decoration: none;
}

.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 20px;
    cursor: pointer;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: #333;
}

@media screen and (max-width: 1030px) {
    .nav-menu a {
        margin: 0 -5px;
        font-size: 13px;
    }
}

@media screen and (max-width: 785px) {
    .nav-menu a {
        margin: 0 -7px;
        font-size: 12px;
    }
}


@media screen and (max-width: 768px) {

    nav {
        transition: opacity .5s linear;
    }

    .nav-menu {
        float: right;
    }

        .nav-menu a {
            margin: 0 -7px;
        }

                .nav-menu a.active {
                    background-color: #333;
                    color: #fff;
                }

    ul {
        display: none !important;
        flex-direction: column;
        align-items: center;
        margin-top: 1rem;
        padding: 0;
    }

    ul.show {
        display: flex !important;
        padding: 15px;
        background-color: #fff;
        margin: 55px -30px 0 0;
        box-shadow: 0px 2px 5px rgba(0, 0, 0, 0.2);
    }


    li {
        margin-bottom: 1rem;
    }

    .hamburger {
        display: flex;
        float: right;
        padding: 15px 0;
        margin-left: auto;
    }


}