* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.main-header {
  background: url(../images/skyscraper4.jpg);
  background-size: cover;
  background-position: center;
  height: 100vh;
  min-height: 300px;
  color: #fff;
  position: relative;
}

.primary-overlay {
  background: rgba(63, 57, 77, 0.7);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.nav-wrapper .brand-logo {
  display: flex;
  justify-content: center;
}

.brand-logo img {
  display: none;
}

.sidenav > div {
  height: 10%;
  padding-top: 0.5%;
  display: flex;
  justify-content: center;
}

.sidenav > div img {
  width: 13%;
}

.main-header .showcase {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  margin-left: 5%;
}

.scroll-icon {
  position: absolute;
  bottom: 5%;
  left: 40%;
  opacity: 0.5;
}

.main-text h5 {
  font-size: 0.75rem;
}

.main-text h1 {
  font-size: 1rem;
}

.flow-text {
  font-size: 0.75rem;
}

.flow-text ~ .btn {
  display: none;
}

.box {
  padding: 5% 2% !important;
  height: 250px;
}

.box h4 {
  font-size: 1.5rem;
}

.box .material-icons {
  font-size: 2.5rem;
}

.section-about .row {
  margin-top: 20px;
}

.section-about .row img {
  border-radius: 50px 50px 50px 50px;
}

#contact iframe {
  width: 100%;
}

#gallery {
  background-color: rgb(202, 198, 198);
  display: flex;
  justify-content: center;
}

#gallery h1 {
  font-size: medium;
}

#about h2 {
  font-size: medium;
}

/* Tablet */
@media only screen and (min-width: 768px) and (max-width: 991px) {
  .nav-wrapper .brand-logo {
    justify-content: center;
  }

  .brand-logo img {
    display: inline;
    width: 20%;
  }

  .main-text h5 {
    font-size: 0.95rem;
  }

  .main-text h1 {
    font-size: 2rem;
  }

  .flow-text {
    font-size: 0.95rem;
  }

  .flow-text ~ .btn {
    display: inline-block;
  }

  .btn-small {
    height: 24px;
    line-height: 24px;
    padding: 0 0.5rem;
  }

  .scroll-icon {
    left: 47%;
  }

  .box {
    padding: 2% 0.5% !important;
    height: 250px;
  }

  .box h4 {
    font-size: 1.5rem;
  }

  .box .material-icons {
    font-size: 2.5rem;
  }

  .section-about .row {
    margin-top: 30px;
    display: flex;
    flex-flow: row wrap;
    justify-content: space-around;
  }

  .section-about .row img {
    margin-top: 30px;
    align-self: center;
    border-radius: 50px 50px 50px 50px;
  }

  #gallery {
    background-color: rgb(202, 198, 198);
    display: flex;
    justify-content: center;
  }

  #gallery h1 {
    font-size: larger;
  }

  #about h2 {
    font-size: larger;
  }
}

/* large Screen */
@media only screen and (min-width: 992px) {
  .nav-wrapper .brand-logo {
    justify-content: flex-start;
  }

  .main-header {
    height: 100vh;
    min-height: 600px;
  }

  .main-header .showcase {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    margin-left: 5%;
  }

  .btn-large {
    height: 50px;
    line-height: 24px;
    padding: 0.75rem 0.75rem;
    font-weight: bold;
  }

  .flow-text ~ .btn {
    display: inline-block;
  }

  .nav-wrapper .brand-logo {
    display: flex;
    align-items: center;
    padding-left: 3%;
  }

  .brand-logo img {
    display: inline;
    width: 10%;
  }

  .scroll-icon {
    bottom: 1%;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0.5;
  }

  .main-text h5 {
    font-size: 2rem;
  }

  .main-text h1 {
    font-size: 3rem;
  }

  .flow-text {
    font-size: 2rem;
  }

  ul .sidenav {
    display: none;
  }

  .box {
    padding: 40px 10px !important;
    height: 350px;
  }

  .box h4 {
    font-size: 2rem;
  }

  .box .material-icons {
    font-size: 3rem;
  }

  .section-about .row {
    margin-top: 40px;
    display: flex;
    flex-flow: row wrap;
    justify-content: space-around;
  }

  .section-about .row img {
    border-radius: 50px 50px 50px 50px;
  }

  #gallery {
    background-color: rgb(202, 198, 198);
    display: flex;
    justify-content: center;
  }

  #gallery h1 {
    font-size: xx-large;
  }

  #about h2 {
    font-size: 4rem;
  }
}