create adaptive background w3 schools code example
Example: background css
/* Color (Example: red): */
html,body {
background-color: red;
}
/* Image (Example: your.picture): */
html,body {
background-image: url("your.picture");
}
/* Color (Example: red): */
html,body {
background-color: red;
}
/* Image (Example: your.picture): */
html,body {
background-image: url("your.picture");
}