* {
  padding: 0;
  margin: 0;
  font-family: "Roboto", sans-serif;
}

body {
  background-image: url("../images/backcover.svg");
  background-position: right;
  background-size: 870px;
  background-repeat: no-repeat;
}
button {
  cursor: pointer;
}

/* Navbar Section */

.main-div {
  max-width: 70rem;
  margin: 30px auto;
}
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
nav img {
  width: 120px;
}
.nav-items {
  display: flex;
  color: #3e4794;
}
.nav-item {
  margin: 0 30px;
  cursor: pointer;
}
nav .btn {
  border: none;
  background: linear-gradient(to right, #965cf2, #ff8adc);
  padding: 4px 12px;
  cursor: pointer;
  font-weight: bold;
  color: #ffffff;
  border-radius: 50px;
  cursor: pointer;
}
.menu-icon {
  display: none;
  height: 30px;
  cursor: pointer;
}

/*----------------------- intro section ---------------------*/
.intro-section {
  display: flex;
  padding-top: 50px;
}
.left-section {
  max-width: 50%;
  margin-top: 100px;
}
.intro-section h1 {
  color: #251b92;
  font-size: 64px;
  margin-bottom: 40px;
}
.intro-section h4 {
  color: #6c6c6c;
  font-weight: normal;
  width: 300px;
  margin-bottom: 50px;
  line-height: 1.6;
}
.btn-lm {
  border: none;
  background: linear-gradient(to right, #965cf2, #ff8adc);
  padding: 10px 20px;
  font-weight: bold;
  font-size: 18px;
  color: #ffffff;
  border-radius: 50px;
  cursor: pointer;
}
.imgs-div img:nth-child(3) {
  position: fixed;
  top: 15%;
  right: 5%;
  height: 80vh;
  width: 55vw;
}
.vector-img {
  position: fixed;
  top: 65%;
  left: 45%;
}
.vector-dot {
  position: fixed;
  top: 65%;
  left: 48.5%;
}
@media screen and (max-width: 1200px) {
  body {
    background-size: 680px;
  }
  .main-div {
    padding: 3% 10%;
  }
  nav img {
    height: 40px;
  }
  .imgs-div img:nth-child(3) {
    height: 100vh;
    width: 50vw;
  }
  .vector-dot {
    left: 49.5%;
  }
}
@media only screen and (max-width: 768px) {
  body {
    background-size: 500px;
    background-position: top right;
  }
  .main-div {
    padding: 5px 20px;
  }
  .nav-items,
  .btn {
    display: none;
  }
  .menu-icon {
    display: inline-block;
  }
  .imgs-div img:nth-child(3) {
    height: 50vh;
  }
  .intro-section {
    padding-top: 120px;
  }
  .left-section h1 {
    font-size: 48px;
  }
  .vector-dot,
  .vector-img {
    display: none;
  }
}
@media only screen and (max-width: 480px) {
  body {
    background: none;
  }
  .intro-section {
    display: flex;
    flex-direction: column;
    margin-top: -180px;
  }
  .left-section {
    width: 100%;
  }
  .imgs-div img:nth-child(3) {
    position: sticky;
    width: 75vw;
  }
}