Social Icons functionality

    /*
     * Social Icons functionality
     *
     * Adds icon `width` and `height` properties inline
     *
     * @since The Bootstrap Blog 0.1
     */

    $icon_dimensions = get_theme_mod ( 'icon_dimensions', 32 );
    $icon_dimensions_css = '.icon {width:' . $icon_dimensions .'px;height:' . $icon_dimensions .'px;}';
    wp_add_inline_style( 'the-bootstrap-blog', esc_attr ( $icon_dimensions_css ) );


    if ( get_theme_mod( 'social_icons', true ) ) {

    $class = 'd-inline';
    $gt = 'icon icon-github';
    $tw = 'icon icon-twitter';
    $fb = 'icon icon-facebook';

    $icon_github = '.icon-github {background: url("' . get_template_directory_uri() . '/images/social-github.svg");}';
    $icon_twitter = '.icon-twitter {background: url("' . get_template_directory_uri() . '/images/social-twitter.svg");}';
    $icon_facebook = '.icon-facebook {background: url("' . get_template_directory_uri() . '/images/social-facebook.svg");}';

    wp_add_inline_style( 'the-bootstrap-blog', $icon_github . $icon_twitter . $icon_facebook );

    }