Bug with icon bar when I add a post (The7 Theme)

Hi,

I use the free version of your module with the theme The7.
This theme proposes an “icon bar” which, for some time now, no longer appears correctly due to a CSS file of your module.

After looking in more detail, it appears that there is a CSS conflict with the Yoast SEO module that overwrites the fontello.css file instructions (from theme The7).
When I select an icon from the “icon bar” with the Google Chrome Inspector, I have a CSS file from the Yoast SEO module (plugins/wordpress-seo/css/dist/metabox-620.min.css) that adds the following instructions:

#TB_window #TB_ajaxContent li::before {
margin: 0 10px 0 0;
font-weight: 700;
content: “+”;
}

And so, all the icons presented are “+” and the presentation of the icons is distorted (probably due to other instructions of the CSS file of the Yoast SEO module).

Could you tell me how to solve this problem?

Thank you in advance for your feedback.