Input
Output
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Basic Box Shadow</title> <style> .box { width: 200px; height: 200px; background-color: #3498db; box-shadow: 10px 10px 20px rgba(0, 0, 0, 0.3); /* Horizontal offset, Vertical offset, Blur radius, Shadow color */ } </style> </head> <body> <div class="box"></div> </body> </html>