'How to select a multiple classes inside a two condition class?

HTML code: 

<html class="mobile portrait">
    <body>
        <div>
            <header>
                <img class="company_logo">
            </header>
            <section>
                <div>
                    <img class="company_logo">
                </div>
            </section>
            <footer>
                <img class="company_logo">
            </footer>
        </div>
    </body>
</html>

In order to display: none;, How can I apply one rule to .company_logo while .mobile .portrait?:

Update: Edited HTML code to add multiple company_logo. Code deleted from the question: 

/* CSS code */
.mobile .portrait > body > div > header > .company_logo {
    display: none;
}
csscss-selectors


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