5 div
> div { width:
100px; background: green; }
6 body
> div { direction: ltr }
8 <body style=
"width: 400px">
9 <div><div style=
"margin-left: 100px; margin-right: auto"></div></div>
10 <div><div style=
"margin-left: auto; margin-right: 100px"></div></div>
11 <div><div style=
"margin-left: auto; margin-right: auto"></div></div>
12 <div><div style=
"margin-left: 200px; margin-right: auto"></div></div>
13 <div><div style=
"margin-left: 100px; margin-right: 100px"></div></div>