Bách khoa toàn thư mở Wikipedia
.mw-stack { box-sizing: border-box;}.mw-stack > div { margin: 1px; overflow: hidden;}@media all and (min-width: 721px) { .stack-clear-left { float: left; clear: left; } .stack-clear-right { float: right; clear: right; } .stack-left { float: left; } .stack-right { float: right; } .stack-margin-clear-left { float: left; clear: left; margin-right: 1em; } .stack-margin-clear-right { float: right; clear: right; margin-left: 1em; } .stack-margin-left { float: left; margin-right: 1em; } .stack-margin-right { float: right; margin-left: 1em; }}