<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> <style> body{ margin:0; } ul{ margin:0; padding:0; } li{ list-style: none; } div{ width: 100px; height: 100px; background-color: red; } </style> </head> <body> <div></div> <ul> <li>1</li> </ul> </body> </html>
