.vista-documentos .block-title::before,
.vista-documentos h2::before {
  content: "";
  display: inline-block;
  width: 28px;
  height: 28px;
  margin-right: 10px;
  vertical-align: middle;
  background-image: url('/sites/default/files/adjuntos/informacion-relevante.png');
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
}