* {
  margin: 0;
  padding: 0;
  font-family: "OPPOSans";
}

@font-face {
  font-family: "OPPOSans";
  src: url(OPPOSans-Regular.woff2);
}

nav {
  position: fixed;
  z-index: 100;
  width: 100%;
  background-color: #fff;
}

nav .wrapper {
  position: relative;
  max-width: 1300px;
  padding: 0px 30px;
  height: 55px;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo img {
  width: 110px;
  padding: 10px 0 0 0;
}

.wrapper .nav-links {
  display: inline-flex;
}

.nav-links li {
  list-style: none;
}
.nav-links li a {
  padding: 5.5px 13px;
  color: #696969;
  letter-spacing: 0.5px;
  text-decoration: none;
  font-size: 11.5px;
  font-weight: 600;
  margin: 0 10px 0 0;
  position: relative;
}
.nav-links li a::before {
  content: "";
  background-color: #000;
  width: 0%;
  position: absolute;
  height: 0.115rem;
  right: 8px;
  bottom: -10px;
  transition: width 0.3s;
}

.nav-links li a:hover::before {
  content: "";
  background-color: #000;
  width: 80%;
  position: absolute;
  height: 0.115rem;
  right: 8px;
  bottom: -10px;
}

.first {
  margin-right: 210px;
}

header {
  width: 100%;
  height: 100vh;
  position: relative;
  background-image: url(Background.webp);
  background-repeat: no-repeat;
  background-size: cover;
}
header h1 {
  position: absolute;
  top: 13%;
  left: 5%;
  font-size: 45px;
  letter-spacing: 0.5px;
}

header h4 {
  position: absolute;
  top: 23%;
  left: 5%;
  font-size: 22px;
  letter-spacing: 0.5px;
}

header h3 {
  position: absolute;
  bottom: 25%;
  left: 5%;
  font-size: 15px;
  font-weight: 600;
  color: #696969;
  letter-spacing: 0.5px;
}

.btn1 {
  position: absolute;
  bottom: 16%;
  left: 5%;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.5px;
  padding: 9px 22px;
  background-color: #000;
  color: #fff;
  border-radius: 22px;
  cursor: pointer;
  transition: all 0.5s;
}
.btn1:hover {
  background-color: #1c1c1c;
  box-shadow: 0 5px 30px 0 #00000038;
}

.btn2 {
  position: absolute;
  bottom: 16%;
  left: 13%;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.5px;
  padding: 9px 18px;
  border: 1px solid #000;
  cursor: pointer;
  border-radius: 22px;
}