STYLE SWITCHER

Add web browser type class to the body tag of your WordPress theme

Often you run into CSS issues with different browsers, and one way to easily make browser-specific CSS is if you have a browser class added to the body tag of your theme. That way you can for example just add .ie8 .myclass { cssfix } to specify CSS that will only be read by a certain browser (IE8 in this case).

function alx_browser_body_class( $classes ) {
    global $is_lynx, $is_gecko, $is_IE, $is_opera, $is_NS4, $is_safari, $is_chrome, $is_iphone;
 
    if($is_lynx) $classes[] = 'lynx';
    elseif($is_gecko) $classes[] = 'gecko';
    elseif($is_opera) $classes[] = 'opera';
    elseif($is_NS4) $classes[] = 'ns4';
    elseif($is_safari) $classes[] = 'safari';
    elseif($is_chrome) $classes[] = 'chrome';
    elseif($is_IE) {
        $browser = $_SERVER['HTTP_USER_AGENT'];
        $browser = substr( "$browser", 25, 8);
        if ($browser == "MSIE 7.0"  ) {
            $classes[] = 'ie7';
            $classes[] = 'ie';
        } elseif ($browser == "MSIE 6.0" ) {
            $classes[] = 'ie6';
            $classes[] = 'ie';
        } elseif ($browser == "MSIE 8.0" ) {
            $classes[] = 'ie8';
            $classes[] = 'ie';
        } elseif ($browser == "MSIE 9.0" ) {
            $classes[] = 'ie9';
            $classes[] = 'ie';
        } else {
            $classes[] = 'ie';
        }
    }
    else $classes[] = 'unknown';
 
    if( $is_iphone ) $classes[] = 'iphone';
 
    return $classes;
}
add_filter( 'body_class', 'alx_browser_body_class' );

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