CHECKED ON THESE
FOLLOWING BROWSERS
==WINDOWS==

IE11.0
SLEIPNIR6.0.0.4
GOOGLE CHROME36.0
OPERA49.0
FIREFOX60.0

==MACINTOSH==

FIREFOX3.6.3,SAFARI7.0.5
JAVASCRIPT enable
RECOMENDED SCREEN RESOLUTION higher than 1280*800
PLUG-IN Require Macromedia(Adobe) flash
LAST UPDATE 2018/8/18

Valid HTML 4.01 Transitional

正当なCSSです!