Input
Output
<!DOCTYPE html> <html lang="en"> <head> <style> .container { position: relative; width: 400px; height: 200px; background-color: lightgray; } .box { position: absolute; top: 50px; left: 30px; width: 100px; height: 100px; background-color: lightblue; } </style> </head> <body> <div class="container"> <div class="box">Box</div> </div> </body> </html>