.app-background {
  display: block;
  position: absolute;
  top:0;
  left:0;
  right: 0;
  height: 100%;
  background: rgba(0, 0, 0, 0) url('../images/4.1.jpg');
  background-repeat: no-repeat;
  background-position: center center;
  background-attachment: fixed;
  background-size: cover;
  z-index: -1;
}

.wrapper > .container > section > article {
  font-family: 'Muli', sans-serif;
  position: relative;
  padding: 0px 0;
  display: block;
  text-align: center;
  text-decoration: none;
  color: white;
  font-size: 18px;
}

h1 { 
  text-align: center;
  font-size: 60px;
  opacity: 1;
  color: white;
  
}

h3 { 
  font-size: 32px;
}

p { 
  font-size: 18px;
}

a{
    color: white;
    font-weight: bold;
    text-decoration: none;
    opacity: 0.9;
  }
a:hover{
    color: white;
    font-weight: bold;
    text-decoration: underline;
    opacity: 1;
  }


.wrapper > .container > section > article.background {
}

.wrapper > .container > section > article.background:after {
  position: absolute;
  content: " ";
  display: block;
  top: 0;
  left: -100%;
  right: -100%;
  bottom: 0;
  z-index: -1;
  background: black;
}

.wrapper > .container > section > article.backgroundcontactos:after {
  background: none;
}

.backgroundcontactos {
  text-align: center;
  color: white;
  text-decoration: none;
}