H3{
  font-size: 40px;
}
/* modo-claro-y-oscuro */
.boton-flotante {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: #37566d;
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  font-size: 16px;
  cursor: pointer;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}
.boton-flotante img {
  max-width: 75%;
  margin-top: 5px;
  height: auto;
  transition: transform 0.2s;
}
.boton-flotante:hover img {
  transform: scale(1.2);
}
.negro {
  color: #000;
}
.blanco {
  color: #fff;
}
 /* articulo */
 .articulo {
  width: 80%;
  height: auto;
}
.articulo img {
  width: 80%;
  opacity: 0%;
}
.articulo p {
  font-size: 15px;
  text-align: justify;
}
.imgtex {
    display: flex;
    align-items: center;
}
.img-computadora {
    max-width: 30%;
    max-height: auto;
    margin-right: 20px;
}
.img-computadora2 {
    max-width: 30%;
    max-height: auto;
    margin-left: 20px;
}
.imgtex p {
    margin-top: 20px;
}
@media (max-width: 768px) {
    .imgtex {
        flex-direction: column;
    }
    .imgtex2 {
        flex-direction: column-reverse !important;
    }
    .img-computadora {
        max-width: 100%;
        max-height: auto;
        margin-right: 0;
    }
    .img-computadora2 {
        max-width: 100%;
        max-height: auto;
        margin-left: 0;
    }
    .imgtex p {
        margin-top: 20px;
    }
}
 /* fondo */
.fondo {
  width: 100%;
  height: auto;
  display: flex;
  justify-content: center;
  background-color: #c8cfd6;
}
.final {
  background-color: #919fad;
}