article {  
  margin: 10px auto;
  text-align: center;
  max-width: 768px;
  z-index: 0;
}

h2 {
  margin-top: 0.5rem;
}

h3 {
  margin: 0;

}

section.aboutUs p {
  color: #000;
}

.bg {
  position: absolute;
  height: 20em;
  opacity: 10%;
}

hr.bpreta {
  margin: auto;
  width: 80%;
  border-color: #e52e31;
}

.bl {
  font-size: 4vw;
  text-align: start;
  margin: 5% 0 0 2.5%;
}
section.aboutUs article img {
  height: 44vw;
  max-height: 350px;
}

section.aboutUs article img.imgL {
  height: 20vw;
  max-height: 183px;
}

ul {
  list-style-type: square;
  font-size: 2.5vw;
}

ul li {
  text-align: start;
}
@media (min-width: 768px) {

  .bl, ul {
    font-size: 30px;
  }
  
}