html {
  scroll-behavior: smooth;
}
header {
  background: url(../images/kiefer-likens-oWQ7CXb7sP4-unsplash.jpg);
  background-size: cover;
  background-position: center;
  min-height: 1000px;
}

@media only screen and (max-width: 992px) {
  header {
    min-height: 900px;
  }

  nav .brand-logo {
    font-size: 1.5rem;
  }

  .parallax-container {
    width: 100%;
    height: 180px;
    margin-left: auto;
    margin-right: auto;
  }

  .contact {
    padding-bottom: 5vw;
  }
}

.section {
  padding-top: 4vw;
  padding-bottom: 4vw;
}

/* scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

/* Track */
::-webkit-scrollbar-track {
  background: rgb(65, 46, 34);
}

/* Handle */
::-webkit-scrollbar-thumb {
  background: #805048;
  border-radius: 4px;
}

/* Handle on hover */
::-webkit-scrollbar-thumb:hover {
  background: rgb(172, 123, 116);
}

.sticky-nav {
  margin: 0;
  position: fixed;
  overflow: hidden;
  z-index: 99;
}

/* scrolldown mouse arrow animation */

.scroll-down {
  position: absolute;
  bottom: 8rem;
  left: 50%;
  transform: translateX(-50%);
  scroll-behavior: smooth;
}

.mouse {
  width: 2rem;
  height: 4rem;
  border: 1px solid #ffffff;
  border-radius: 2rem;
  margin-bottom: 0.5rem;
  display: flex;
}

.mouse span {
  width: 1.2rem;
  height: 1.2rem;
  background-color: #ffffff;
  border-radius: 2rem;
  display: block;
  margin: auto;
  animation: move-wheel 1s linear infinite;
}

.arrow span {
  display: block;
  width: 1rem;
  height: 1rem;
  border: 1px solid transparent;
  border-right-color: #ffffff;
  border-bottom-color: #ffffff;
  transform: rotate(45deg);
  margin: auto;
  animation: arrow-down 0.5s alternate infinite;
}

@keyframes move-wheel {
  0% {
    opacity: 0;
    transform: translateY(-1rem);
  }
  100% {
    opacity: 1;
    transform: translateY(1rem);
  }
}

@keyframes arrow-down {
  0% {
    opacity: 0;
  }
  25% {
    opacity: 0.25;
  }
  50% {
    opacity: 0.5;
  }
  75% {
    opacity: 0.75;
  }
  100% {
    opacity: 1;
  }
}