.contenido-principal{
  width: 90%;
  margin:0 auto;
  padding-top: 75px;
  position: relative;
  display: block;
  font-family: sans-serif;
  transition: .5s;
  max-width: 1400px;
}
.center{
  text-align: center;
}
@media only screen
and (max-width: 768px) {
  .foto{
    display: block;
    width: 200px;
    height: 200px;
    float: left;
    
  }
.marco{
  font-size: 15px;
  width: 95%;
  margin: 0 auto;
  transition: 0.4s;
  margin-bottom: 5px;
  border-radius: 5px;
  height: 70px;
  box-sizing: border-box;
  display: flex;
  align-items: center;
}
.marco:hover{
  background-color: #ECECEC;
  transition: 0.4s;   
}
.foto{
  width: 50px;
  height: 50px;
  border-radius: 50%;
}
.avatar{
  margin-right: 10px; 
  padding: 10px; 
  position: relative;
  float: left;
}
.nombre,
.ocupacion{
  box-sizing: border-box;
  display: block;
  vertical-align: middle;
}
.titulo{
  font-size: 24px;
  margin: 20px;
}
.derechos-autor{
  font-size: 15px;
  color: rgba(48, 69, 92, 0.9);
  line-height: 26px;
  letter-spacing: 1px;
}
/* ---------------------------------------------------------- */
.departamento{
  border-top: 1px;
  border-top-style: solid;
  border-top-color: #C5911F;
  border-bottom: 1px;
  border-bottom-style: solid;
  border-bottom-color: #C5911F;
  width: 90%;
  padding: 15px;
  width: 95%;
  margin: 0 auto;
  margin-top: 4px;
  margin-bottom: 4px;
  font-size: 15px;
}
}

@media only screen and (max-width: 375px)
{
    .nombre p{
      font-size: 14px;
    }
}

@media only screen
and (min-width: 769px) {
  .marco{
    width: 220px;
    height: 280px;
    border-radius: 8px;
    box-shadow: 0px 5px 20px  rgba(0, 0, 0, 0.2);
    background-image: url("fondo-marco.jpg");
    background-size: cover;
    overflow: hidden;
    margin: 20px;
    text-align: center;
    transition: all 0.25s;

    
  }
  .marco:hover{
    transform: translateY(-15px);
    box-shadow: 0 12px 16px rgba(0, 0, 0, 0.4);
  }
  .foto{
    width: 70%;
    margin-top: 15px ;
    border-radius: 50%;
    box-shadow: 0px 0px 8px; 
    margin-bottom: 15px;
  }
  .nombre p{
    font-size: 16px;
    padding: 5px;
  }
  .caja-departamento{
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin: auto;
    width: 80%
  }
  .titulo{
    font-size: 25px;
    padding: 10px;
  }
  .departamento{
    padding: 15px;
    width: 80%;
    margin: 0 auto;
    margin-top: 5px;
    margin-bottom: 4px;
    font-size: 18px;
    border-top: 1px;
    border-top-style: solid;
    border-top-color:  #C5911F;
    
  }
  .derechos-autor{
    width: 65%;
    display: block;
    flex-wrap: wrap;
    justify-content: center;
    margin: auto;



  }
  .derechos-autor p{
    margin:12px;
    color: rgba(48, 69, 92, 0.9);
    line-height: 26px;
    letter-spacing: 1px;
  }
}