*,
*::before,
*::after {
  box-sizing: border-box;
}
 
body {
  font-family: 'Quicksand', sans-serif;
  height: 100vh;
  margin: 0;
  display: flex;
  flex-direction: column;
}

h1, h2, h3 {
  color: black;
  text-align: center;
}

p {
    color: black;
    text-align: justify;
}

h2 {
  padding: 15px;
  font-size: 20px;
  background: rgb(220,220,255);
  background: linear-gradient(360deg, rgba(220,220,255,1) 0%, rgba(200,200,255,1) 94%);
}

h4 {
    margin: 0;
    padding-bottom: 15px;
  }
  
footer {
    padding: 20px;
    color: black;
    text-align: center;
    background-color: #a9ecfd;
    font-weight: bold;
}

nav {
  background-color: white;
  display: flex;
  justify-content: space-between;
  padding: 1rem 2rem;
}

nav ul {
  display: flex;
  align-items: center;
  gap: 1rem;
  list-style: none;
}

nav div img {
  width: 50px;
}

nav ul li a {
  text-decoration: none;
  font-family: "Segoe UI", sans-serif;
  color: black;
  background-color: hwb(192 68% 2%);
  border-radius: 1000px;
  font-weight: 600;
  padding: 0.3rem 1rem;
}

nav ul li a:hover {
  color: hsl(227, 65%, 33%);
  font-weight: bold;
  transform: scale(2);
}

.logo {
  width: 180px; 
  height: auto;
}

.menu-icon {
  font-size: 28px;
  display: none;
  color: hsl(227, 65%, 33%);
}

ul#menu-list {
  margin: 0 0 0 0;
  padding: 0;
}

.jumbotron {
  display: flex;
  flex-direction: column;
  justify-content: center; 
  align-items: center;    
  min-height: 40vh; 
  font-size: 18px;
  padding: 40px;
  background: rgb(169,236,253);
  background: linear-gradient(180deg, rgba(169,236,253,1) 25%, rgb(170, 211, 255) 100%);
  text-align: center;
  color: rgb(0, 0, 0);
}

.jumbotron img {
  max-width: 900px;
  width: 100%; 
  height: auto;
  object-position: center;
}

.jumbotron h1 {
  margin: 20px 0px; 
}
.jumbotron p {
  margin: 0px 20px;
}

.font-image {
    width: 100%;
    height: auto;
    margin: 20px 0;
  }

main {
  padding: 20px;
  background: rgb(203, 239, 255);
  gap: 1.5rem;
}

#content {
  flex: 5;
  display: flex;
  flex-flow: column nowrap;
  gap: 1rem 2rem;
}

.featured-image {
  width: 100%;
  max-height: 300px;
  object-fit: cover;
  object-position: center;
}

.container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

.container > section {
  flex: 1 1 calc(25% - 20px);
  margin: 10px;
}

.container-feedback {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
}

.container-feedback > section {
  flex: 1 1 calc(25% - 20px);
  margin: 10px;
}

.container1, .container2, .container3, .container4 {
  box-shadow: 0 4px 10px 0 rgb(169,236,253);
  border-radius: 20px;
  background-color: rgb(187, 229, 254);
  padding: 20px;
  margin: 10px;
  max-width: 400px;
  text-align: center;
}

.keunggulan ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.keunggulan li {
  flex: 1 1 calc(50% - 20px); 
  margin-bottom: 5px;
  padding: 20px;
  background-color: whitesmoke;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s;
}

.keunggulan li strong {
  font-size: 18px;
  text-align: center;
  padding: 8px;
  color: black;
}

.keunggulan li p {
  font-size: 16px;
  color: black;
  margin: 0;
}
.jenis {
    margin-top: 20px;
}

.jenis-list {
    list-style-type: none;
    padding: 0;
}

.jenis-list li {
    margin-bottom: 20px;
}

.jenis-list strong {
    display: block;
    margin-bottom: 10px;
    font-size: 18px;
}

.solusi {
    list-style-type: disc;
    padding-left: 20px;
    margin: 0;
}

.solusi li {
    margin-bottom: 5px;
}

.card {
  box-shadow: 0 4px 6px 0 rgb(187, 229, 254);
  border-radius: 15px;
  background-color: white;
  border: 3px solid rgb(187, 229, 254);
  margin: 0;
  padding: 20px;
}

article#feedback.card {
  margin-top: 20px;
}

header {
  display: inline;
}

.btn {
  display: inline-block;
  padding: 6px 13px;
  font-size: 14px;
  color: #fff;
  background-color: hsl(227, 65%, 33%);
  text-align: center;
  text-decoration: none;
  border-radius: 20px;
  transition: background-color 0.3s, transform 0.2s;
}

.btn:hover {
  background: white;
  color: hsl(227, 65%, 33%);
  border: 3px solid hsl(227, 65%, 33%);
  font-weight: bolder;
  transform: scale(1.05);
}

.referensi {
    display: flex;
    flex-direction: column;
    justify-content: center; 
    align-items: center;    
    height: 20vh; 
    padding: 20px;
    background: white;
    text-align: center;
    color: rgb(0, 0, 0);
  }
  
  .referensi h3 {
    font-size: 14px;
    margin: 0;
  }
  .referensi p {
    font-size: 14px;
    margin: 0;
  }

/* Perangkat dengan lebar layar 1200px dan di bawahnya */
@media screen and (max-width: 1200px) {
  main {
    flex-flow: column nowrap;
  }

  .container > section {
    flex: 1 1 calc(33.33% - 20px);
  }

  .container-feedback > section {
    flex: 1 1 calc(33.33% - 20px);
  }
}

/* Perangkat dengan lebar layar 768px dan di bawahnya */
@media screen and (max-width: 768px) {
  nav ul {
    justify-content: center;
  }

  .container > section {
    flex: 1 1 calc(50% - 20px);
  }

  .container-feedback > section {
    flex: 1 1 calc(50% - 20px);
  }

  .jumbotron {
    padding-top: 60px;
  }
}

/* Perangkat dengan lebar layar 480px dan di bawahnya */
@media screen and (max-width: 480px) {
  nav {
    flex-wrap: wrap;
    position: fixed;
    width: 100%;
    top: 0;
  }

  nav ul {
    flex-direction: column;
    width: 100%;
  }

  nav ul li:last-of-type {
    padding-bottom: 8px;
  }

  .container > section {
    flex: 1 1 100%;
  }

  .container-feedback > section {
    flex: 1 1 100%;
  }

  .jumbotron {
    padding-top: 100px;
  }

  .referensi {
    padding-top: 100px;
  }
}

@media screen and (max-width: 768px) {
  .keunggulan ul {
    flex-direction: column;
  }

  .keunggulan li {
    flex: 1 1 100%; 
  }

  .keunggulan {
    max-width: 100%;
  }

  .keunggulan h2 {
    font-size: 20px;
    padding: 10px;
  }

  .keunggulan li {
    margin-bottom: 0;
    padding: 8px;
  }

  .keunggulan li strong {
    font-size: 18px;
  }

  .keunggulan li p {
    font-size: 16px;
  }
}