Thème OPEN responsive

[bg62]

Hello ....
My English is very bad >>> = Google translate!
I just started making a theme for Coppermine and I would like to have as many remarks, criticisms, to succeed in improving it even more and to put it in download then.
We speak well here of the "visual" aspect, only, for other problems' SEO +++) I do for now only discover
The 'demo' is visible here: http://refok.fr/wall/index.php
Normally the code is 100% 'responsive' and checked here:
http://longuetraine.fr/rwd/
https://search.google.com/search-console/mobile-friendly?utm_source=mft&utm_medium=redirect&utm_campaign=mft-redirect&hl=en
I attach a screenshot also.
Friendships
bg

[phill104]

Nice work on our excellent contribution. If you wish you can post on our French support board and hopefully Francois can assist with your English (assuming you are French from the URL?)

Hopefully others can comment too, but I quite like the look of it so far.

[bg62]

Great thank you for this answer
But then what should we do: continue here or on the support in French, and then what topic?
What I am looking for are reviews, improvements to make for the theme before putting it to the availability of all, no matter the language eventually;)
Friendships
bg

[bg62]

I continue the tests before using this theme and sharing it.
BUT I already encounter a first problem:
The top of the sidebar, when clicked, is connected to 'twitter', why and how to remove this?
thank you
Bg
Via CSS or HTML ?
if somebody as the right code ....

[bg62]

I continue the tests before using this theme and sharing it.
BUT I already encounter a first problem:
The top of the sidebar, when clicked, is connected to 'twitter', why and how to remove this?
thank you
Bg
Via CSS or HTML ?
if somebody as the right code ....

Ok, first problem solved!
BUT it remains:
1 - problems for the theme to be 100% responsive
2 - many W3C errors (css and html)
So I do not know what to do and so thank you in advance for your help.