[RSS Feed/News] Hide footer block on mobile?

[XenForo]

As certain things already show in the mobile version of my theme I want to hide some footer blocks just on mobile.

I thought I found an answer to it in an other thread so I tried to put this in the HTML section of block 2;
Code:

<span class="b2">
<xb_footer_block2>
</span>

And this in extra.less:
Code:

/* footer blocks hide on mobile*/
@media (max-width: @xf-responsiveMedium) {
        .b2 {
            display: none;
    }
}

But it's not working, what did I do wrong?

ادامه مطلب...