cor de fundo do CSS
body {
background-color: green;
}
Scratchy
body {
background-color: green;
}body {
background-color: rgb(255,255,255);
}html,body {
background-color: red;
}div {
opacity:25% ;
}<body bgcolor="some color">
HTML goes here
</body>body {
background-color: black;
}