header {
    background: linear-gradient(to top, #fff, #fff);
    box-shadow: 0px 6px 50px -20px rgba(0, 0, 0, 0.2);
    width: 100%;
    height: 120px;
    margin-top: 0px;
    position: fixed;
    z-index: 100;
    padding: 40px;
}

.container_menu {
    max-width: 1600px;
    height: 100%;
    margin: auto;
    display: flex;
    justify-content: space-between;
}

.logo {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
}

.logo img {
    width: 200px;
}

.menu {
    display: flex;
    align-items: center;
}


.menu ul {
    display: flex;
}

.menu ul li {
    list-style: none;
    margin: 20px 16px;
}

.menu ul li a {
    color: #023047;
    font-size: 16px;
    font-weight: 600;
    position: relative;
}

.menu nav img {
    display: none;
}

.menu #btn_menu {
    display: none;
}

.btn_quote{
    color: #023047;
    padding: 20px 40px;
    border: 2px solid #023047;
    border-radius: 10px;
    font-weight: 600;
    margin: 0px 30px;
    transition: all 300ms;
}

.btn_quote:hover{
    color: #fff;
    background: #023047;
}

@media only screen and (min-width: 768px) {
    .menu nav {
        display: block !important;
    }
}

@media only screen and (max-width: 720px) {

    .menu nav {
        position: fixed;
        top: 0;
        background: #FFFFFF;
        width: 250px;
        height: 100vh;
        padding: 40px;
        z-index: 1;
        transition: all 300ms;
        right: 0;
        display: none;
    }


    .menu ul {
        flex-direction: column;
        margin-top: 40px;
    }

    .menu ul li {
        margin-top: 30px;
        margin-left: 0px;
    }

    .menu ul li a {
        color: #023047;
    }

    .btn_quote {
        color: #023047;
        padding: 20px 40px;
        border: 2px solid #023047;
        border-radius: 10px;
        font-weight: 600;
        margin: 20px 0px;
        transition: all 300ms;
    }

    .menu nav img {
        display: block;
        width: 150px;
    }

    #back_menu {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: rgba(0, 0, 0, 0.5);
        display: none;
    }

    .menu #btn_menu {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 50px;
        height: 50px;
        background: rgba(255, 255, 255, 0.1);
        font-size: 24px;
        border-radius: 50px;
        cursor: pointer;
        transition: all 300ms;
    }

    .menu #btn_menu:hover {
        background: rgba(255, 255, 255, 0.2);
    }
}