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<!DOCTYPE html> <html> <head> <title>CSS3 tutorial: Multiple border using box-shadow demo</title> <style> div { width: 300px; height: 300px; margin: 35px; background: #fff; box-shadow: 0 0 0 10px #b2d00e, 0 0 0 25px #3539bf, 0 0 0 35px #6bc7ea, 0 5px 20px 30px #000; } </style> </head> <body> <div></div> </body> </html>