@media (max-width: 1400px) {
    body {
        margin: 0 15px;
    }

    .banner {
        height: 300px;
    }
}

@media (max-width: 1050px) {
    .exams_human {
        width: 400px;
        margin-left: 100px;
        margin-bottom: 10px;
    }
}

@media (max-width: 830px) {
    .exams_human {
        width: 350px;

    }
}

@media (max-width: 775px) {
    body {
        margin: 0 15px;
    }

    .banner {
        height: 200px;
    }

    .exams_human {
        width: 300px;
        margin-left: 60px;
    }
}

@media (max-width: 640px) {

    .exams_human {
        width: 200px;
        margin-left: 40px;
    }
}

@media (max-width: 650px) {
    .contact_form_main {
        display: flex;
        flex-direction: column;
        margin-right: 20px;
    }

    .contact_form input,
    .contact_form textarea {
        margin-top: 0;
    }

    .contact_form_main button {
        align-self: center;
    }

    .brand img {
        width: 300px;
    }
}

@media (max-width: 545px) {
    .menu_bottom .container a {

        padding: 12px 15px;
    }

    .exams_human {
        display: none;
    }
}

@media (max-width: 436px) {
    .menu_bottom .container a {

        padding: 5px 10px;
    }

    .brand img {
        width: 250px;
    }
}

@media (max-width: 380px) {
    .menu_bottom .container a {

        padding: 5px 0;
        margin: 0 5px;
    }

    .brand img {
        width: 250px;
    }
}