header-logo.php

<?php
    global $nm_theme_options;

    // Logo URL
    if ( isset( $nm_theme_options['logo'] ) && strlen( $nm_theme_options['logo']['url'] ) > 0 ) {
        $logo_href = ( is_ssl() ) ? str_replace( 'http://', 'https://', $nm_theme_options['logo']['url'] ) : $nm_theme_options['logo']['url'];
    } else {
        $logo_href = NM_THEME_URI . '/assets/img/logo@2x.png';
    }

    // Alternative logo
    $has_alt_logo = false;
    if ( $nm_theme_options['alt_logo'] ) {
        $has_alt_logo = true;

        // Logo URL
        if ( isset( $nm_theme_options['alt_logo_image'] ) && strlen( $nm_theme_options['alt_logo_image']['url'] ) > 0 ) {
            $alt_logo_href = ( is_ssl() ) ? str_replace( 'http://', 'https://', $nm_theme_options['alt_logo_image']['url'] ) : $nm_theme_options['alt_logo_image']['url'];
        } else {
            $alt_logo_href = NM_THEME_URI . '/assets/img/logo-light@2x.png';
        }
    }
?>
<div class="nm-header-logo">
    <a href="<?php echo esc_url( home_url( '/' ) ); ?>">
        <img src="<?php echo esc_url( $logo_href ); ?>" class="nm-logo" alt="<?php bloginfo( 'name' ); ?>">
        <?php if ( $has_alt_logo ) : ?>
        <img src="<?php echo esc_url( $alt_logo_href ); ?>" class="nm-alt-logo" alt="<?php bloginfo( 'name' ); ?>">
        <?php endif; ?>
    </a>

    <style type="text/css">
        #flags_language_selector img{
            margin:1px;
            border:1px solid #333;
        }
        #flags_language_selector, .desktop {
            /*margin-left: 930px;
            padding-top: 12px;*/
            float: right;
        }
        .country-flag {
            height: 18px !important;
        }
        #flags_language_selector a{
            cursor: pointer;
        }
        #flags_language_selector img {
            opacity: 0.5;
        }
        #flags_language_selector a img{
            opacity: 1;
        }
        .mobile { display: none; }
        @media only screen and (max-width: 768px) {
            #flags_language_selector {
                float: initial;
            }
            #flags_language_selector a{
                display: inline;
            }
            .country-flag {
                height: initial !important;
            }
            #flags_language_selector img {
                vertical-align: middle;
            }
            .mobile { display: block; }
            .desktop { display: none; }
        }
    </style>
    <div class="desktop">
        <div id="flags_language_selector"><?php language_selector_flags_opposite(); ?></div >
    </div>

</div>