* {
  font-family: "Poppins", sans-serif;
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
.banner {
  width: 100%;
  height: 100vh;
  background-image: linear-gradient(rgba(0, 0, 0, 0.85), rgba(0, 0, 0, 0.85)),
    url(img/background.png);
  background-size: cover;
  background-position: center;
}

.navbar {
  width: 85%;
  margin: auto;
  padding: 35px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  width: 170px;
  cursor: pointer;
}

.navbar ul li {
  list-style: none;
  display: inline-block;
  margin: 0 20px;
  position: relative;
}

.navbar ul li a {
  text-decoration: none;
  color: #fff;
}

.navbar ul li::after {
  content: "";
  height: 3px;
  width: 0;
  background: #ffc107;
  position: absolute;
  left: 0;
  bottom: -10px;
  transition: width 0.5s ease-out;
}

.navbar ul li:hover::after {
  width: 100%;
}

.content {
  width: 100%;
  position: absolute;
  top: 60%;
  transform: translateY(-50%);
  text-align: center;
  color: #fff;
}

.title {
  font-size: 70px;
  line-height: 100px;
  font-weight: bold;
  height: 100px;
  text-align: left;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}

.content p {
  margin: 20px auto;
  font-weight: 100;
  line-height: 25px;
}

.content button {
  padding: 15px 25px;
  margin: 20px;
  font-size: 16px;
  letter-spacing: 1px;
  border: 2px solid #ffc107;
  color: #fff;
  cursor: pointer;
  background: linear-gradient(to right, transparent 50%, #ffc107 50%);
  background-size: 200%;
  background-position: left;
  transition: background-position 0.5s ease-out;
}

.content button:hover {
  background-position: right;
  color: #000;
}

.slider {
  color: #ffc107;
  margin-left: 12px;
  animation: slider 6s linear infinite;
}

@keyframes slider {
  0% {
    margin-top: -400px;
  }
  5% {
    margin-top: -200px;
  }
  30% {
    margin-top: -200px;
  }
  35% {
    margin-top: 0px;
  }
  65% {
    margin-top: 0px;
  }
  70%{
    margin-top: 200px;
  }
  100%{
    margin-top: 200px;
  }
}