* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}
html,
body {
  overflow-x: hidden;
}

body {
  font-family: "Raleway", sans-serif;
  position: relative;
}

/* utility classes */
.font-mont {
  font-family: "Montserrat", sans-serif;
}

/* navbar */
#navbar {
  background-color: transparent;
  color: black;
  overflow: auto;
}

.nav-container {
  margin: auto;
  max-width: 1200px;
  overflow: auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  height: 8vh;
  align-items: center;
  background: transparent;
}

.logo {
  text-decoration: none;
  color: white;
  z-index: 1000;
}

.logo:hover {
  color: white;
}

.nav-ul {
  display: flex;
  justify-content: space-around;
  width: 40%;
  z-index: 10000;
}

.nav-ul li {
  list-style-type: none;
}

.nav-ul li a {
  text-decoration: none;
  color: white;
}

/* hamburger menu */
.burger div {
  width: 23px;
  height: 2px;
  background-color: white;
  margin: 5px;
  transition: all 0.3s ease;
}

.burger {
  display: none;
}

/* hero section */

.hero-parent {
  position: relative;
  width: 100%;
  height: 100vh;

  background-image: linear-gradient(
      45deg,
      rgba(106, 140, 231, 0.2) 0%,
      rgba(106, 140, 231, 0.2) 14.286%,
      rgba(90, 125, 212, 0.2) 14.286%,
      rgba(90, 125, 212, 0.2) 28.572%,
      rgba(42, 81, 156, 0.2) 28.572%,
      rgba(42, 81, 156, 0.2) 42.858%,
      rgba(26, 67, 138, 0.2) 42.858%,
      rgba(26, 67, 138, 0.2) 57.144%,
      rgba(10, 52, 119, 0.2) 57.144%,
      rgba(10, 52, 119, 0.2) 71.43%,
      rgba(74, 111, 194, 0.2) 71.43%,
      rgba(74, 111, 194, 0.2) 85.716%,
      rgba(58, 96, 175, 0.2) 85.716%,
      rgba(58, 96, 175, 0.2) 100.002%
    ),
    linear-gradient(
      45deg,
      rgba(106, 140, 231, 0.2) 0%,
      rgba(106, 140, 231, 0.2) 14.286%,
      rgba(90, 125, 212, 0.2) 14.286%,
      rgba(90, 125, 212, 0.2) 28.572%,
      rgba(42, 81, 156, 0.2) 28.572%,
      rgba(42, 81, 156, 0.2) 42.858%,
      rgba(26, 67, 138, 0.2) 42.858%,
      rgba(26, 67, 138, 0.2) 57.144%,
      rgba(10, 52, 119, 0.2) 57.144%,
      rgba(10, 52, 119, 0.2) 71.43%,
      rgba(74, 111, 194, 0.2) 71.43%,
      rgba(74, 111, 194, 0.2) 85.716%,
      rgba(58, 96, 175, 0.2) 85.716%,
      rgba(58, 96, 175, 0.2) 100.002%
    ),
    linear-gradient(
      135deg,
      rgba(106, 140, 231, 0.2) 0%,
      rgba(106, 140, 231, 0.2) 14.286%,
      rgba(90, 125, 212, 0.2) 14.286%,
      rgba(90, 125, 212, 0.2) 28.572%,
      rgba(42, 81, 156, 0.2) 28.572%,
      rgba(42, 81, 156, 0.2) 42.858%,
      rgba(26, 67, 138, 0.2) 42.858%,
      rgba(26, 67, 138, 0.2) 57.144%,
      rgba(10, 52, 119, 0.2) 57.144%,
      rgba(10, 52, 119, 0.2) 71.43%,
      rgba(74, 111, 194, 0.2) 71.43%,
      rgba(74, 111, 194, 0.2) 85.716%,
      rgba(58, 96, 175, 0.2) 85.716%,
      rgba(58, 96, 175, 0.2) 100.002%
    ),
    linear-gradient(90deg, rgb(9, 9, 9), rgb(180, 180, 180));
  /* for parallax effect */
  background-attachment: fixed;
}

.hero-sec {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  /* change the height to cover the whole page */
  height: 100vh;
}

.hero-sec h1 {
  font-size: calc(1.5rem + 3vw);
  padding-bottom: 1rem;
  color: white;
}

.hero-sec p {
  font-size: calc(1rem + 0.3vw);
  text-align: center;
  line-height: 2rem;
  padding-bottom: 2rem;
  color: rgb(212, 199, 199);
}

.hero-sec .hero-btn {
  padding: 1rem 2rem 1rem 2rem;
  text-decoration: none;
  background: aquamarine;
  color: white;
  border-radius: 5rem;
}

.hero-sec a {
  color: #333;
  padding: 0 2rem 0 1rem;
}

/* dropdown button */
a {
  text-decoration: none;
  color: #000000;
}

a:hover {
  color: #222222;
}

/* Dropdown */

.dropdown {
  display: inline-block;
  position: relative;
}

.dd-button {
  display: inline-block;
  border: 1px solid gray;
  border-radius: 4px;
  padding: 1rem 6rem 1rem 6rem;
  background-color: #ffffff;
  cursor: pointer;
  white-space: nowrap;
}

.dd-button:after {
  content: "";
  position: absolute;
  top: 50%;
  right: 15px;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 5px solid black;
}

.dd-button:hover {
  background-color: #eeeeee;
}

.dd-input {
  display: none;
}

.dd-menu {
  position: absolute;
  top: 100%;
  border: 1px solid #ccc;
  border-radius: 4px;
  height: 30vh;
  padding: 0;
  margin: 2px 0 0 0;
  box-shadow: 0 0 6px 0 rgba(0, 0, 0, 0.1);
  background-color: #ffffff;
  list-style-type: none;
  overflow-y: scroll;
}

.dd-menu li {
  border-bottom: 1px solid #111;
}

.dd-input + .dd-menu {
  display: none;
}

.dd-input:checked + .dd-menu {
  display: block;
}

.dd-menu li {
  padding: 1rem 6.7rem;
  cursor: pointer;
  white-space: nowrap;
}

.dd-menu li:hover {
  background-color: #f6f6f6;
}

.dd-menu li a {
  display: block;
  margin: -10px -20px;
  padding: 10px 20px;
}

.dd-menu li.divider {
  padding: 0;
  border-bottom: 1px solid #cccccc;
}

/* section */
#section-content {
  max-width: 1700px;
  overflow: auto;
  margin: auto;
  display: flex;
  align-items: center;
  padding-top: 5rem;
  padding-bottom: 5rem;
  position: relative;
}

.content-left h2 {
  font-size: calc(1rem + 3vw);
  padding-bottom: 1.5rem;
}

.content-left p {
  font-size: calc(1rem + 0.3vw);
  line-height: 2rem;
}

.content-right {
  flex: 1;
}
.content-right img {
  width: 800px;
  height: 606px;
  margin-left: 5rem;
}

.img-pc {
  display: block;
}

.img-mobile {
  display: none;
}

.supplier-btn {
  position: absolute;
  margin-top: 1.5rem;
  background-color: #4188da;
  border: 2px solid #4188da;
  width: 250px;
  color: white;
  display: block;
  margin: auto;
  margin-top: 1.5rem;
  padding: 0.8rem 2rem;
  border-radius: 5px;
  font-size: 1rem;
  cursor: pointer;
  outline: none;
}
/* users  */
#users h2 {
  font-size: calc(1rem + 2vw);
  text-align: center;
  margin-top: 3rem;
}

#users ul {
  font-size: calc(1rem + 0.3vw);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 1.5rem;
  margin-bottom: 3rem;
}

#users li {
  margin: auto;
  padding-bottom: 1.5rem;
}

#footer {
  color: white;
  background-color: black;
  text-align: center;
  padding: 1.5rem 0;
}

/* mobile */
@media screen and (max-width: 1024px) {
  .nav-ul {
    width: 50%;
  }
}

@media screen and (max-width: 768px) {
  .nav-ul {
    position: absolute;
    right: 0;
    top: 8vh;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 30vh;
    background: #111;
    z-index: 10000;
    /* change transform to generate diff animation */
    transform: translateY(-150%);
  }

  .nav-ul li a {
    color: white;
  }

  .nav-ul li {
    opacity: 0;
  }

  .burger {
    display: block;
    cursor: pointer;
    z-index: 10000;
  }
  /* hero-section */
  .hero-sec p {
    text-align: center;
    padding: 0 0.5rem;
    padding-bottom: 1rem;
  }

  .hero-sec h1 {
    text-align: center;
    padding: 0 1rem;
  }
  /* dropdown button */
  .dd-menu {
    height: 50vh;
  }

  .dd-menu li {
    padding: 1rem 7.1rem;
  }
  #section-content {
    flex-direction: column;
  }
  .content-right {
    margin: auto;
    margin-bottom: 2rem;
  }

  .content-left {
    text-align: center;
    padding: 0 1rem;
  }

  .content-right img {
    margin-left: 0rem;
    margin: auto;
    width: 370px;
    height: 250px;
  }

  .img-pc {
    display: none;
  }

  .img-mobile {
    display: block;
  }
  .supplier-btn {
    position: relative;
  }
  /* users */
  #users li {
    text-align: center;
    padding: 1rem 1rem;
  }
}

.nav-active {
  transform: translateY(0%);
  opacity: 1;
}

/* Hamburger animation */
.toggle .line1 {
  transform: rotate(-45deg) translate(-4px, 6px);
}
.toggle .line2 {
  opacity: 0;
}
.toggle .line3 {
  transform: rotate(45deg) translate(-4px, -6px);
}

/* link animation */
@keyframes navLinkFade {
  from {
    opacity: 0;
    transform: translateY(50px);
  }
  to {
    opacity: 1;
    transform: translateY(0px);
  }
}