@meibukan76,
Ok, thank you. Please use this CSS code. Insert this CSS code in Dashboard > Forums > Settings > Styles > Custom CSS Code textarea, save it, delete all caches, go to forum front-end and press Ctrl+F5:
#wpforo #wpforo-wrap .wpfpm-msg-inner,
#wpforo #wpforo-wrap .wpfpm-msg-inner p {margin-bottom: 20px!important;;}
#wpforo #wpforo-wrap .wpfpm-msg-inner ol,
#wpforo #wpforo-wrap .wpfpm-msg-inner ol li {list-style:decimal!important; margin: 2px 15px;}
#wpforo #wpforo-wrap .wpfpm-msg-inner ul,
#wpforo #wpforo-wrap .wpfpm-msg-inner ul li{list-style:disc!important; margin: 2px 15px;}
#wpforo #wpforo-wrap .wpfpm-msg-inner .wpforo-post blockquote,
#wpforo #wpforo-wrap .wpfpm-msg-inner blockquote{display:block; margin:5px 0 10px 0; width:90%; padding:10px; font-size:13px; background: #f5f5f5;}