Tryit Editor v1.8

Source Code:
<!DOCTYPE html> <html> <head> <style> .box { display:-ms-flexbox; /* Internet Explorer 10 */ display:-moz-box; /* Firefox */ display:-webkit-box; /* Safari and Chrome */ display:box; border:1px solid black; } .ord1 { margin:5px; -ms-flex-order:1; /* Internet Explorer 10 */ -moz-box-ordinal-group:1; /* Firefox */ -webkit-box-ordinal-group:1; /* Safari and Chrome */ box-ordinal-group:1; } .ord2 { margin:5px; -ms-flex-order:2; /* Internet Explorer 10 */ -moz-box-ordinal-group:2; /* Firefox */ -webkit-box-ordinal-group:2; /* Safari and Chrome */ box-ordinal-group:2; } </style> </head> <body> <div class="box"> <div class="ord2">First in source</div> <div class="ord1">Second in source</div> <div class="ord1">Third in source</div> </div> <p><b>Note:</b> Flexible boxes are not supported in IE 9, and earlier versions.</p> </body> </html>
Result:
W3Schools.com - Try it yourself