My personal custom CSS for Discord

discord-custom.css

/* bot badges */
.avatar-small[style*="/avatars/155799811134717952/"] + .member-inner .member-username::after,  /* ash */
.avatar-small[style*="/avatars/128235170955264000/"] + .member-inner .member-username::after /* maple */
{
  height: 14px;
  line-height: 15px;
  background: #7289da;
  color: #fff;
  -ms-flex-negative: 0;
  border-radius: 3px;
  flex-shrink: 0;
  font-size: 10px;
  font-weight: 500;
  margin-left: 6px;
  padding: 1px 2px;
  text-transform: uppercase;
  vertical-align: bottom;
  content: "BOT";
}

/* bigg avatars */
.channel-members .member {
  height: initial;
}
.channel-members .avatar-small {
  background-size: 45px 45px;
  width: 45px;
  height: 45px;
}