背景图片适应屏幕百分百
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1" /> <title>背景图片大小</title> </head> <style> body{ margin: 0; } html, body { height: 100%; width: 100%; margin: 0; padding: 0; overflow: hidden; background-size: 100% 100%; background-image: url("./1.png"); } </style> <body> </body> </html>