body {
max-width: 1500px;
margin: auto;
background: transparent url(image/fon.png) no-repeat fixed center top;
background-size: 100% auto; }

Shu koddi qayerga qoyishim kerak
4 daqiqa 23 soniyadan keyin yozdi:
Manabu kod bima vazifani bajaradi


body {
background-color: #ffffff;
color: #000000;
margin: 0;
padding: 0;
}