body {
    display: flex;
    min-height: 100vh;
    flex-direction: column;
  }

  main {
    flex: 1 0 auto;
  }

.slider h3,
.slider h5{
    text-shadow: 1px 1px 3px rgba(0, 0, 0,0.5);
}

.parallax-container {
    height: 20%;
}

.parallax img {
    filter: grayscale(1);
    opacity: 0.5 !important;
}

.clients img{
    max-width: 200px;
    filter: drop-shadow(1px 1px 1px rgba (0,0,0,0.2));
}

section {
    padding: 20px 0;
}