rborst
Kindly check custom css has wrong code
{\rtf1\ansi\ansicpg1252\cocoartf1671\cocoasubrtf600
{\fonttbl\f0\fnil\fcharset0 HelveticaNeue;}
{\colortbl;\red255\green255\blue255;}
{\*\expandedcolortbl;;}
\paperw11900\paperh16840\margl1440\margr1440\vieww10800\viewh8400\viewkind0
\deftab560
\pard\pardeftab560\slleading20\partightenfactor0
\f0\fs24 \cf0 .acm-features.style-1 .features-item .action \{\uc0\u8232 display: none;\
\}\
\}\
Also add code via template style options not via editor