CSS - Flexbox - Reorder content -- (e.g. Move sidebar under content if it's hardcoded above it in HTML)

css-flexbox-reorder-content-on-mobile.html

<style>
@media (max-width: 800px) {
    .container {
    display: -webkit-box;
    display: -moz-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-box-orient: vertical;
    -moz-box-orient: vertical;
    -webkit-flex-direction: column;
    -ms-flex-direction: column;
    flex-direction: column;
    }
    .content {
    -webkit-box-ordinal-group: 1;
    -moz-box-ordinal-group: 1;
    -ms-flex-order: 1;
    -webkit-order: 1;
    order: 1;
    }

    .sidebar {
    -webkit-box-ordinal-group: 2;
    -moz-box-ordinal-group: 2;
    -ms-flex-order: 2;
    -webkit-order: 2;
    order: 2;
    }
}
</style>

<div class="container">
    <div class="sidebar"></div>
    <div class="content"></div>
</div>