Change order columns bootstrap

<div class="row">
    <div class="col-md-3">
        sidebar
    </div>
    <div class="col-md-9 ">
        main
    </div>
</div>

//  CSS

.row{
   display: flex;
    flex-flow: column-reverse;
     }

Similar codes

0 vote203 views1 answer
Css device orientation
CSS
3 votes201 views1 answer
How to change the page background in css
CSS
54 votes216 views6 answers
Css ellipsis
CSS
0 vote202 views2 answers
The package could not be installed. the theme is missing the style.css stylesheet
CSS
21 votes202 views5 answers
Text-overflow: ellipsis 2 lines
CSS
0 vote204 views1 answer
Flex align self
CSS
0 vote209 views1 answer
How to override bootstrap css in wordpress
CSS
266 votes509 views2 answers
Font awesome 5 pro cdn link
CSS
12 votes227 views5 answers
Responsive font size
CSS
3 votes256 views6 answers
Htaccess
CSS