body {
    margin: 0;
    background-color: rgb(0, 0, 0);
  }

.grevianer {
    max-width: 100%;
    max-height: 100%;
}

.container {
    position: relative;
    width: 100%;
    max-width: none;
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box; 
    margin: 0;
    position: absolute;
    top: 50%;
    -ms-transform: translateY(-50%);
    transform: translateY(-50%);
}

/* Bigger than 550 */
@media (min-width: 550px) {
    .section {
      padding: 12rem 0 11rem;
    }
    .hero {
      padding-bottom: 12rem;
      text-align: left;
      height: 165px;
    }
    .phone {
      position: absolute;
      top: -7rem;
      right: 3rem;
      max-height: 362px;
      z-index: 3;
    }
    .phone + .phone {
      top: -6rem;
      display: block;
      max-width: 73.8%;
      right: 0;
      z-index: 2;
      max-height: 338px;
    }
    .hero-heading {
      font-size: 2.4rem;
    }
  }
  
  /* Bigger than 750 */
  @media (min-width: 750px) {
    .hero {
      height: 190px;
    }
    .hero-heading {
      font-size: 2.6rem;
    }
    .section {
      padding: 14rem 0 15rem;
    }
    .hero {
      padding: 16rem 0 14rem;
    }
    .section-description {
      max-width: 60%;
      margin-left: auto;
      margin-right: auto;
    }
    .phone {
      top: -14rem;
      right: 5rem;
      max-height: 510px;
    }
    .phone + .phone {
      top: -12rem;
      max-height: 472px;
    }
    .categories {
      padding: 15rem 0 8rem;
    }
  }
  
  /* Bigger than 1000 */
  @media (min-width: 1000px) {
    .section {
      padding: 20rem 0 19rem;
    }
    .hero {
      padding: 22rem 0;
    }
    .hero-heading {
      font-size: 3.0rem;
    }
    .phone {
      top: -16rem;
      max-height: 615px;
    }
    .phone + .phone {
      top: -14rem;
      max-height: 570px;
    }
  }