.container2 {
    max-width: 75% !important;
    width: 100%;
padding-right: 15px;
padding-left: 15px;
margin-right: auto;
margin-left: auto;
}
.responsive {
  width: 80%;
  height: auto;
  display: block;
  margin-left: auto;
  margin-right: auto;
}
.fondo{
    width: 100%;
    background: url(../img/parallax/earth2_paralax.jpg);
    background-position: center;
    background-size: cover;
    background-attachment: fixed;
    display: flex;
    justify-content: center;
    align-items: center;
}

.sostenibilidad{
    font-size: 50px;
    color: #fff; 
    font-weight: 700;
}

.img-fluid-kit {
    max-width: 100%;
    height: 70px;
}