Reply To: Avatar padding issue

try this CSS

#bbpress-forums div.bbp-forum-author img.avatar,
#bbpress-forums div.bbp-topic-author img.avatar,
#bbpress-forums div.bbp-reply-author img.avatar {
border: none;
max-width: 130px;
padding: 0 0 10px 0;
margin: 12px auto 0 auto;
float: none;
}