style_sito(1).css

*{
  margin: 0;
  padding: 0;
  font-family: 'poppins', sans-serif;
  box-sizing: border-box;
}

.hero {
  background: #1d2026;
  min-height: 100vh; /*viewport height = viewable screen's height*/
  width: 100%;
  color: white;
  position: relative;
}

nav {
  display: flex;
  align-items: center;
  padding: 20px 8%;
}

nav .menu-img {
  width: 25px;
  margin-right: 20px;
  cursor: pointer;
}

nav .logo-img {
  width: 160px;
  cursor: pointer;
}

nav ul {
  flex: 1;
  text-align: right;
}

nav ul li {
  display: inline-block;
  list-style: none;
  margin: 0 20px;
}

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

button {
  background: white;
  height: 30px;
  width: 60px;
  border-radius: 20px;
  border: 0;
  outline: 0;
  cursor: pointer;
  margin-right: 30px;
  transition: background 0.5s;
}

button span {
  display: block;
  background: #999;
  height: 26px;
  width: 26px;
  border-radius: 50%; /*circle*/
  margin-left: 2px;
  transition: background 0.5s, margin-left 0.5s;
}

.lamp-container {
  position: absolute;
  top: -20px;
  left: 24%;
  width: 200px;
}

.lamp-img {
  width: 100%;
}

.light-img {
  position: absolute;
  width: 700px;
  top: 99%;
  left: 47%;
  transform: translateX(-50%);
  opacity: 0;
  transition: opacity 0.5s;
}

.text-container {
  max-width: 600px;
  margin-top: 7%;
  margin-left: 50%;
}

.text-container h1 {
  font-size: 80px;
  font-weight: 400px;
}

.text-container a {
  text-decoration: none;
  background: #00986f;
  padding: 14px 40px;
  display: inline-block;
  color: #fff;
  font-size: 18px;
  margin-top: 30px;
  border-radius: 30px;
}

.arrow {
  color: green;
  border: solid black;
  border-width: 0 3px 3px 0;
  display: inline-block;
  padding: 3px;
  transform: rotate(135deg);
  -webkit-transform: rotate(135deg);
}

.control {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  margin-top: 150px;
}

.control .line {
  width: 250px;
  height: 4px;
  background: white;
  margin: 0 20px;
  border-radius: 2px;
}

.control .line span {
  width: 50%;
  height: 8px;
  margin-top: -2px;
  border-radius: 4px;
  background: #00986f;
  display: block;
}

.active {
  background: green;
}

.active span {
  background: white;
  margin-left: 31px;
}

.on {
  opacity: 1;
}