.montaña {
    position: absolute;
    bottom: 80px;
    width: 100%;
    height: 400px;
    background: linear-gradient(to top, #4e9a51, #6dbb70);
    clip-path: polygon(0% 100%, 50% 0%, 100% 100%);
    display: flex;
    justify-content: center;
    align-items: flex-end;
  }