.nosotros-section {
  padding: 60px 0 0 0;
  background: #dbdbdb;
  border-bottom: 1px solid #e3e3e3;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', 
  Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

.contenedor.txtblock.nosotros {
  min-height: 250px;
  padding: 50px 100px;
  background-color: #23231F;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  text-align: left;
  margin-top: 100px;
}

.contenedor.txtblock{
  padding: 80px 0 80px 0;
  width: 100%;
  border-bottom: 1px solid #e3e3e3;
}
.nosotros-section .container {
  margin-right: auto;
  margin-left: auto;
  width: 940px;
  max-width: 100%;
}

.row {
  display: flex;
  flex-wrap: wrap;
  margin-left: 0px;
  margin-right: 0px;
  justify-content: center;
  width: 100%;
  padding-top: 1rem;
}

.span3 {
  max-width: 25%;
  padding: 8px;
  box-sizing: border-box;
  margin-top: 40px;
}

.nombre-nosotros {
  padding: 1rem;
}

.person {
  width: 100%;
  background: #fff;
  margin-bottom: 8px;
  padding-bottom: 8px;
  position: relative;
  text-align: center;
}

.person img {
  height: auto;
  max-width: 100%;
  vertical-align: middle;
  border: 0;
}

.person h3 {
  font-size: 16px;
  margin: 5px 0;
  letter-spacing: -1px;
  line-height: 40px;
  text-transform: none;
  color: #222;
  font-family: inherit;
  font-weight: bold;
  line-height: 20px;
  color: inherit;
  text-rendering: optimizelegibility;
}

.person p a {
  font-size: 12px;
  color: #999;
  text-decoration: none;
  font-weight: normal;
}

.person p a:hover {
  text-decoration: underline;
}




#txtblock-nosotros {
  width: 100%;
}

@media (min-width: 1200px) {
  .span3 {
    width: 270px;
  }
}

@media (max-width: 992px) {
  .span3 {
    flex: 0 0 50%;
    max-width: 50%;
  }
}

@media (max-width: 768px) {
  .span3 {
    flex: 0 0 100%;
    max-width: 100%;
    padding: 10px;
  }
  .person {
    padding: 15px;
    margin-bottom: 20px;
  }
  .person h2 {
    font-size: 18px;
  }
  .person p a {
    font-size: 14px;
  }
}

@media (min-width: 1200px) {
  .nosotros-section .container {
    width: 1170px;
  }
}