.yb0:after{content:"";color:white;background-color:#108C4E;}.y1{color:#1A37E6;}.yb1:after{content:"快速";color:white;background-color:#1A37E6;}.y2{color:#E61ADF;}.yb2:after{content:"通勤快速";color:white;background-color:#E61ADF;}