* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Verdana, Geneva, Tahoma, sans-serif;
}

:root {
  --black: #2f2f2f;
  --white: #fff;
  --red: #f83838;
}

.main {
  position: relative;
  min-height: 90vh;
  background: linear-gradient(#111111, #252525);
  padding: 30px 90px;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}

.main::before {
  content: "Adventure";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 26vh;
  font-weight: 690;
  color: rgba(255, 255, 255, 0.05);
}

header {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  padding: 26px 100px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  max-width: 80px;
}

.navigation {
  display: flex;
}

.navigation li {
  list-style: none;
}

.navigation li a {
  position: relative;
  color: var(--white);
  margin-left: 40px;
  text-decoration: none;
  transition: 0.25s;
}

.navigation li a:hover {
  color: var(--red);
}

.content {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  margin-top: 90px;
  z-index: 1;
}

.content h2 {
  font-size: 4.3em;
  font-weight: 300;
  color: var(--white);
  text-align: center;
}

.content h2 span {
  font-weight: 710;
}

.btn {
  display: inline-block;
  background: var(--red);
  color: var(--white);
  text-decoration: none;
  padding: 16px 36px;
  margin: 20px;
  border-radius: 50px;
  font-size: 1.25em;
  transition: 0.25s;
}

.btn:hover{
  letter-spacing: 3px;
}

.bike{
  max-width: 80%;
}

.footer{
  position: absolute;
  bottom: 0;
  width: 110%;
  padding: 30px 100px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sci{
  display: flex;
}

.sci li{
  list-style: none;
  padding-left: 10px;
}

.sci li a{
  color: var(--white);
  font-size: 2em;
  margin-right: 20px;
  transition: 0.25s;
}

.sci li a:hover{
  color: var(--red);
}

.dots{
  display: flex;
  margin-right: 10px;
}

.dots .dot{
  width: 10px;
  height: 10px;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  cursor: pointer;
  margin-left: 10px;
}

.dots .dot.active{
  background: var(--white);
}

.slider .slides{
  position: absolute;
  top: 60%;
  left: 0;
  transform: translateY(-50%);
  z-index: 10;
  width: 100%;
  display: flex;
  justify-content: space-between;
  padding: 0 100px;
  transition: 0.2s;
  opacity: 0;
  pointer-events: none;
}

.slider .slides.active{
  opacity: 1;
  top: 50%;
}

.slider .slides h2{
  color: var(--white);
  font-size: 2.6em;
}

.slider .slides h2:last-child {
  text-align: end;
}

.slider .slides h2 span{
  color: var(--red);
  font-size: 0.5em;
  font-weight: 400;
  font-style: italic;
}

/* Now Make It Responsive */

@media (max-width:991px) {
  .main{
    padding: 40px;
  }
  header{
    padding: 20px 40px;
  }
  .footer{
    padding: 20px 40px;
  }
  .slider{
    position: relative;
    width: 100%;
  }
  .slider .slides{
    position: absolute;
    top: initial;
    padding: 0;
  }
  .slider .slides h2{
    font-size: 2.5em;
  }
}