@import url('https://fonts.googleapis.com/css2?family=Work+Sans&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Forum&family=Work+Sans&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Forum&family=Hind+Guntur:wght@300&family=Work+Sans&display=swap');

body {
  margin: 0;
  padding: 0;
  font-family: 'Arimo', sans-serif;
  background-color: #f1f5f4;
  color: #01358d;
}

img {
  z-index: 50;
}

.topnav {
  margin: auto;
  max-width: 1300px;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 50px;
  margin-top: 20px;
}

.navItems {
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
}

.navItems a {
  color: #9cadaf;
  text-decoration: none;
  font-size: 20px;
  margin: 10px;
}

.topnav a:hover {
  color: #748a90;
}

.topnav a.active {
  color: #f99f38;
}

.container {
  max-width: 1300px;
  margin: auto;
}

.heading2Underline {
  background-color: #f99f38;
  height: 5px;
  width: 50px;
  border-radius: 3px;
  margin-top: -10px;
}

.booksContainer {
  display: flex;
  flex-direction: row;
  justify-content: center;
  gap: 50px;
  flex-wrap: wrap;
  margin-top: 30px;
}

.bookCard {
  border-radius: 5px;
  -webkit-box-shadow: 0px 30px 40px -20px hsl(229, 6%, 66%);
  box-shadow: 0px 30px 40px -20px hsl(229, 6%, 66%);
  padding: 25px;
  margin: 10px;
  width: 245px;
  border-top: 3px solid rgb(51, 161, 253);
}

.bookImg {
  display: flex;
  flex-direction: row;
  justify-content: center;
}

.bookImage {
  border-radius: 50%;
}

@media screen and (max-width: 900px) {
  .topnav {
    flex-direction: column;
    margin-bottom: 20px;
  }

  .navItems {
    display: flex;
    flex-direction: row;
  }

  .landingInfo {
    flex-direction: column;
    align-items: center;
    gap: 50px;
  }

  h1 {
    font-size: 34px;
  }

  .heading1Underline {
    margin-top: -15px;
    width: 50px;
  }

  .landingInfoImage {
    margin: 30px;
    width: 300px;
    height: 300px;
  }

  img.certificateImage {
    max-width: 300px;
  }
}