(1)crete a css file by name ok.css: .myclass{ background-color:yellow; } (2)create a file name file name ok1.css: @import url("ok.css"); /* Using a url */ .second{ color:red; } (3)now write html code importcss.html: <html> <head> <link rel="stylesheet" href="ok1.css"> </head> <body class="myclass second"> jjjjj </body> </html>