html {
  height: 100%;
  font-family: 'Open Sans', sans-serif;
}

body {
  margin: 0;
  background: linear-gradient(40deg, rgb(39, 39, 38), rgb(22, 22, 20));
}

#main-header {
  text-align: center;
  height: 15rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

#main-header img {
  width: 5rem;
  height: 5rem;
  object-fit: cover;
  border-radius: 4px;
  margin: 1rem 0;
}

#main-header h1 {
  margin: 0;
  color: rgb(204, 157, 30);
  font-size: 3.5rem;
}

main p {
  margin: 1rem;
  color: rgb(243, 226, 179);
  text-align: center;
  font-size: 1.25rem;
}

main time {
  display: inline-block;
  background-color: rgb(241, 191, 183);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  color: rgb(31, 29, 26);
}

main a {
  text-decoration: none;
  color: rgb(228, 118, 98);
}

#course-content {
  margin: 4rem auto;
  width: 90%;
  max-width: 50rem;
  list-style: none;
  padding: 1rem 0;
  border-top: 3px solid rgb(204, 157, 30);
}

.content-item {
  margin: 1rem 0;
  padding: 1rem;
  font-size: 1.5rem;
  border-radius: 4px;
  background-color: rgb(31, 29, 26);
  color: rgb(214, 189, 115);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
  text-align: center;
}
@media screen and (max-width: 1035px) {
  main p {
    line-height: 2rem;
  }
}
@media screen and (max-width: 768px) {
  #main-header img {
    width: 4rem;
    height: 4rem;
  }
  #main-header h1 {
    font-size: 2.5rem;
  }
@media screen and (max-width: 550px) {
  #main-header h1 {
    font-size: 2rem;
  }
@media screen and (max-width: 425px) {
  #main-header h1 {
    font-size: 1.9rem;
  }
  main p {
    font-size: 1.15rem;
  }
  .content-item {
    font-size: 1.25rem;
  }
}