[m-rev.] for review: update backends page on website

[Zoltan Somogyi]

On Wed, 19 Jan 2022 16:34:45 +1100 (AEDT), Julien Fischer 
> diff --git a/css/common.css b/css/common.css
> index 375d719..02b7317 100644
> --- a/css/common.css
> +++ b/css/common.css
> @@ -211,11 +211,16 @@ font-style: italic;
>   font-weight: bold;
>   }
> 
> -.backendssubsec{
> -font-size: 16px;
> -font-style: italic;
> -margin-top: 30px;
> -margin-bottom: 0;
> +.backend-container {
> +  display: flex;
> +  flex-wrap: wrap;
> +  column-gap: 5%;
> +  justify-content: space-between;
> +}
> +
> +.backend-item {
> +  flex: 0 47%;
> +  height: 100%;
>   }

I have not even heard of this functionality in CSS before,
but I had a look at  https://css-tricks.com/snippets/css/a-guide-to-flexbox/,
and it says this about justify-content:

Note that that browser support for these values is nuanced. For example, space-between never got support from some versions of Edge, and start/end/left/right aren’t in Chrome yet. MDN has detailed charts. The safest values are flex-start, flex-end, and center.

Zoltan.