<!DOCTYPE html> <html> <head> <style> div{ width:100px; height:100px; color:white; background-color:gray; transition:background-color 3s; -webkit-transition:background-color 3s; /* for safari */ } div:hover{ background-color:lightblue; } </style> </head> <body> <div>web4college</div> </body> </html>
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