Social network icons are not shown

Social network icons are not shown
What is the problem?
After updating the site template, instead of the icon of Facebook, YouTube and other social networks, no icons are shown, but there are links to them.
Also, editing social network links, deleting or adding other items in the template settings are not saved and published
I deleted the rtl.css file from inside the template and the problem was solved
Without this file, I cannot modify the font of the site
What should be done?
rtl.css codes

@font-face{
    font-family: Shabnam;
    src:url("./font/Shabnam.eot") format("embedded-opentype"),
        url("./font/Shabnam.ttf") format("truetype"),
        url("./font/Shabnam.woff") format("woff"),
        url("./font/Shabnam.woff2") format("woff2");
        font-weight:normal;
        font-style:normal
        }

html,body,span,applet,object,iframe,h1,h2,h3,h4,h5,h6,p,
blockquote,pre,abbr,acronym,address,big,cite,code,del,dfn,
img,ins,kbd,q,s,samp,small,strike,strong,sub,sup,tt,var,b,u,
i,center,dl,dt,dd,ol,ul,li,fieldset,form,label,legend,table,
caption,tbody,tfoot,thead,tr,th,td,article,aside,canvas,details,
embed,figure,figcaption,footer,header,hgroup,menu,nav,output,ruby,
section,summary,time,mark,audio,video,input,button,textarea,select {
    font-family: Shabnam !important;

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• This topic was modified 2 years ago by ?????????? ????.

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