:root {
    --cyan: hsl(179, 62%, 43%);
    --bright-yellow: hsl(71, 73%, 54%);
    --light-gray: hsl(204, 43%, 93%);
    --grayish-blue: hsl(218, 22%, 67%);
    --dark-cyan: hsl(179, 47%, 52%);
  }
  
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Karla', sans-serif;
  }
  
  body {
    background-color: var(--light-gray);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
  }
  
  main {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    max-width: 800px;
    width: 100%;
    overflow: hidden;
  }
  
  section {
    padding: 35px;
    text-align: center;
  }
  
  .section-1 {
    background-color: var(--cyan);
    color: white;
  }
  
  .section-2 {
    background-color: var(--dark-cyan);
    color: white;
  }
  
  .card {
    display: flex;
  }
  
  .card > section {
    flex: 1;
  }
  
  h1 {
    color: var(--cyan);
    font-size: 34px;
    margin-bottom: 20px;
  }
  
  .yellow-text {
    color: var(--bright-yellow);
    line-height: 1.2;
    margin-bottom: 15px;
  }
  
  p {
    font-size: 18px;
  }
  
  p.black-text {
    color: var(--grayish-blue);
    line-height: 1.6;
  }
  
  p.desc {
    color: var(--light-gray);
    display: flex;
    justify-content: center;
    align-items: center;
  }
  
  p.desc span {
    font-size: 50px;
    color: white;
    margin-right: 10px;
  }
  
  .btn {
    background-color: var(--bright-yellow);
    border: none;
    border-radius: 50px;
    color: white;
    font-weight: 700;
    margin-top: 15px;
    padding: 15px;
    font-size: 18px;
    width: 100%;
    cursor: pointer;
    transition: background-color 0.3s ease;
  }
  
  .btn:hover {
    background-color: var(--dark-cyan);
  }
  
  ul {
    list-style-type: none;
    opacity: 0.7;
    padding: 0;
  }
  
  ul li {
    line-height: 28px;
  }
  
  @media screen and (max-width: 600px) {
    .card {
      flex-direction: column;
    }
  }