* {
  margin: 0;
}

.main-contenedor {

  font-family: "Roboto", sans-serif;
  display: flex;
}

.main-contenedor .left,
.main-contenedor .right {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: url("img/3.jpeg");
  height:500px;
  background-size: cover;
  background-position: center;
  transition: all 500ms;
}

.main-contenedor .left:hover,
.main-contenedor .right:hover {
  flex: 2;
}

.main-contenedor .right {
  background: url("img/4.webp");
  height:500px;
}

.main-contenedor h2 {
  font-size: 60px;
  font-weight: 900;
}

.main-contenedor p {
  font-size: 20px;
}

.main-contenedor .right {
  color: #fff;
}

.main-contenedor .left {
  color: #fff;
}

.main-contenedor .btn {
  background: rgba(255, 255, 255, 0.7);
  padding: 12px 32px;
  text-decoration: none;
  display: inline-block;
  margin-top: 24px;
  color: #222;
  box-shadow: 0 4px 16px -4px rgba(0, 0, 0, 0.3);
  opacity: 0;
  transition: all 500ms;
}

.main-contenedor .left:hover .btn,
.main-contenedor .right:hover .btn {
  opacity: 1;
}

btn.cover {
  color :OOO;
}