body {
  background-color: #d8cbb8;
  font-size: 10px;
}

header {
  display: flex;
  width: 100%;
  height: 100vh;
  flex-direction: column;
}

h2 {
  position: relative;
  margin: 0 auto;
  text-transform: uppercase;
  font-weight: 900;
  font-size: 2vw;
  color: #fff;
}
h2 a{
  color: white;
  text-decoration: none;
}
h2:before{
  content: "";
  height: 0.3vw;
  width: 0;
  background-color: #fff;
  position: absolute;
  bottom: -0.1vw;
  transition: 500ms all ease-in-out;
  left: 50%;
  transform: translateX(-50%);
}

.landing {
  display: flex;
  transition: 500ms all ease-in-out;
  z-index: 1;
  height: 100%;
  align-content: center;
  align-items: center;
}

.landing:hover > h2:before{
  width: 100%;
  background-color: #fff;
  opacity: 1;
}

.landing__left {
  flex-basis: 50%;
  background: url(inicio-centro.jpg);
  background-size: cover;
  background-position: center;
  box-shadow: 0 50vw 0 50vw rgba(0, 0, 0, 0);
}

.landing__left:hover {
  flex-basis: 150%;
  background: #000;
  box-shadow: 0 50vw 0 50vw rgba(0, 0, 0, 0.7);
  color: white;
  z-index: 500;
}

.landing__right {
  flex-basis: 50%;
  background: url(inicio-elementa.JPG);
  background-size: cover;
  background-position: center;
  box-shadow: 0 -50vw 0 50vw rgba(0, 0, 0, 0);
}

.landing__right:hover {
  flex-basis: 150%;
  background: #000;
  box-shadow: 0 -50vw 0 50vw rgba(0, 0, 0, 0.7);
  color: white;
  z-index: 500;
}
.boton-in{
    display: flex;
    align-items: center;
    justify-content: center;
    position: fixed;
    z-index: 10;
    background: #000;
    width: 100%;
    color: #fff;
    bottom: 0;
    font-size: 20px;
    font-weight: 900;
    font-family: sans-serif;
    padding: 20px;
}
.boton-in a{
  color: #fff;
  text-decoration: none;

}

@media screen and (max-width: 991px) {
  h2 {  
    font-size: 5vw;
    color: #fff;
  }
}