#header{
background-repeat:no-repeat;
background-position: right;
}
background-position: left;
background-position: center;
background-position: left center;
右揃え
#header {
background-repeat:repeat-x;
}
#header {
background-repeat:no-repeat;
background-position: right;
}
削除
#header {
background-repeat:repeat-x;
}