@charset "utf-8";body{width:100%;text-align:center}#header{width:100%}#main_wrapper #right_column #contents{text-align:left}#footer{width:100%}@media screen and (max-width:767px){#header{max-width:640px;margin:0 auto}#main_wrapper{width:100%;display:flex}#main_wrapper #left_column{display:none}#main_wrapper #right_column{max-width:640px;margin:0 auto;background:#fff}#main_wrapper #right_column #contents{padding:0 10px}#main_wrapper #right_column #return_nav_sp{width:100%;margin:30px 0 0}#main_wrapper #right_column #return_nav_sp a{display:block;padding:7px 0 17px;border-top:solid 1px #eee}#main_wrapper #right_column #return_nav_sp a i{font-size:16px;color:#444}#main_wrapper #right_column #return_nav_sp a:link{color:#444;text-decoration:none}#main_wrapper #right_column #return_nav_sp a:visited{color:#444;text-decoration:none}#main_wrapper #right_column #return_nav_sp a:hover{color:#444;text-decoration:none}#main_wrapper #right_column #return_nav{display:none}}@media screen and (min-width:768px){#header{width:100%}#main_wrapper{display:flex;width:980px;margin:0 auto}#main_wrapper #left_column{order:1;width:280px;padding:0 20px;background:#eee}#main_wrapper #right_column{order:2;width:660px;background:#fff}#main_wrapper #right_column #contents{padding:0 20px}#main_wrapper #right_column #return_nav_sp{display:none}#main_wrapper #right_column #return_nav{padding:30px 15px 15px 0;text-align:right}}