Marking of affiliate text links

Hi,

i write a short code to mark all my Affiliate Text Links and put it into custom css:

a[href*="/geht/"]:after {
content: "PL";
vertical-align:super;
font-size: 8px;
}

PL = Partnerlink = Affiliate Link

works fine, but only on desktop and tablet PCs. The reference works not with the mobile theme. Means, the reference it is not shown on mobiles. Where is my mistake? Can you help me?

for example: Post with and without marked links

Thanks

ok found my mistake myself and put the same code to the mobile theme custom css.

works