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<!DOCTYPE html> <html> <head> <title>HTML5, CSS3 and JavaScript demo</title> </head> <body> <div id="conte"> <div id="k1"></div> <div id="k2"> </div> <div id="k3"></div> </div> </body> </html>
#conte{ margin:20px; width:350px; height:500px; background-color:#0F0; overflow: hidden; } #k1{ margin:130px; width:70px; height:70px; background-color:#F00; } #k2{ margin:10px; width:50px; height:50px; background-color:#FF0; } #k3{ margin:10px; width:35px; height:35px; background-color:#F69; }
/* Write JavaScript here */