:root {
  --post-signature-primary: #fa745e;
  --post-signature-background: #f6f8fa;
  --post-signature-border-radius: 2px;
}

#mainContent #post-signature {
  position: relative;
  display: flex;
  flex-direction: column;
  margin: 25px 0;
  padding: 10px 24px 10px 15px;
  background: var(--post-signature-background);
  border-left: 5px solid var(--post-signature-primary);
  border-radius: var(--post-signature-border-radius);
}

#mainContent #post-signature p {
  margin: 0;
  font-size: 14px;
  line-height: 1.6em;
}

#mainContent #post-signature a {
  color: inherit;
  border-bottom: none;
}

#mainContent #post-signature::before {
  content: '!';
  background: var(--post-signature-primary);
  position: absolute;
  top: 16px;
  left: -12px;
  color: #fff;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  text-align: center;
  line-height: 18px;
  font-weight: 800;
  font-size: 12px;
}