@media only screen and (max-width: 992px) {
  header img,
  header .header-nav ul,
  .cover,
  .intro h1,
  .intro a,
  .slider h3,
  .courses-flex,
  .slider .slide,
  .faqs-container,
  footer {
    margin-inline: 0;
    padding-inline: 50px;
  }
  .slider .slide .img-container {
    width: 200px;
  }
  .intro h1 {
    width: auto;
  }

  .courses-container .courses .course {
    width: auto;
  }
  .courses-container .courses {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media only screen and (max-width: 768px) {
  html {
    font-size: 50%;
  }
  .slider .slide .img-container {
    width: 170px;
  }
  header .header-nav {
    position: relative;
    display: flex;
    justify-content: flex-start;
  }

  header .header-nav ul {
    visibility: visible;
    position: absolute;
    width: 150px;
    right: 0;
    padding-inline: 0;
    gap: 0;
    margin-top: 30px;
    flex-direction: column;
    background-color: #1a1e1f;
    transition: transform 0.7s ease, width 0.7s ease;
  }
  .header-items {
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-bottom: 1px solid #ffffff71;
    cursor: pointer;
  }

  .header-items:last-child {
    border-bottom: 0;
  }

  .menu-item {
    display: block;
    background-color: green;
    margin-inline: 50px;
    border: 0;
    padding: 10px 20px;
  }

  .menu-item:focus {
    box-shadow: 0 0 0 #fff !important;
  }

  .hidden-list__responsive {
    display: none !important;
  }
}

@media only screen and (max-width: 658px) {
  .slider .slide .img-container {
    width: 30%;
  }
  header img,
  header .header-nav ul,
  .cover,
  .intro h1,
  .intro a,
  .slider h3,
  .courses-flex,
  .slider .slide,
  .faqs-container,
  footer {
    padding-inline: 10px;
  }

  .courses-flex {
    display: block;
    padding-inline: 80px;
  }

  .courses-container .courses {
    grid-template-columns: minmax(0, 1fr);
  }
  .slider .slide {
    flex-direction: column;
  }

  .slider .dots ul {
    margin-top: 50px;
  }

  .terms {
    pointer-events: none;
  }
}

@media only screen and (max-width: 500px) {
  .courses-flex {
    padding-inline: 00px;
  }
  .menu-item {
    margin-inline: 0 20px;
  }
  header .header-nav ul {
    width: 100px;
    left: 50%;
    transform: translateX(-50%);
  }
}