:root{--active-color: rgba(239, 51, 53)}:root{scroll-behavior:smooth;overflow:hidden;position:fixed}body{position:fixed;overflow:hidden;margin:0;top:0;left:0;font-family:Helvetica Neue,Helvetica,Arial,PingFang SC,Hiragino Sans GB,WenQuanYi Micro Hei,Microsoft Yahei,sans-serif}