* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #1E1E1E;
  }

  .zain-extralight {
    font-family: "Zain", sans-serif;
    font-weight: 200;
    font-style: normal;
  }
  
  .zain-light {
    font-family: "Zain", sans-serif;
    font-weight: 300;
    font-style: normal;
  }
  
  .zain-regular {
    font-family: "Zain", sans-serif;
    font-weight: 400;
    font-style: normal;
  }
  
  .zain-bold {
    font-family: "Zain", sans-serif;
    font-weight: 700;
    font-style: normal;
  }
  
  .zain-extrabold {
    font-family: "Zain", sans-serif;
    font-weight: 800;
    font-style: normal;
  }
  
  .zain-black {
    font-family: "Zain", sans-serif;
    font-weight: 900;
    font-style: normal;
  }
  
  .container {
    text-align: center;
  }
  
  .logo {
    max-width: 150px;
    height: auto;
    margin-bottom: 15px;
  }
  
  .underlined-text {
    font-size: 24px;
    position: relative;
    display: inline-block;
    padding-bottom: 5px;
  }
  
  .underlined-text::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 2px;
    background-color: #1E1E1E;
  }
  .slogan {
    margin-top: -30px;
    color: aliceblue;
  }

  @media screen and (max-width: 768px) {
    .logo {
      max-width: 100px;
    }
  
    .underlined-text {
      font-size: 18px;
    }
  }
  
  @media screen and (max-width: 480px) {
    .logo {
      max-width: 80px;
    }
  
    .underlined-text {
      font-size: 16px;
    }
  }

  
  .button-container {
    text-align: center;
  }
  
  .flat-button {
    text-decoration: none;
    display: inline-block;
    margin-top: 20px;
    background-color: #007BFF;
    color: white;
    border: none;
    padding: 8px 24px;
    font-size: 16px;
    cursor: pointer;
    border-radius: 5px;
    transition: background-color 0.3s ease;
  }
  
  .flat-button:hover {
    background-color: #0056b3;
  }
  
  .flat-button:focus {
    outline: none;
    background-color: #0056b3;
  }
  
  .flat-button:active {
    background-color: #004494;
  }
  
  @media screen and (max-width: 768px) {
    .flat-button {
      padding: 10px 20px;
      font-size: 14px;
    }
  }
  
  @media screen and (max-width: 480px) {
    .flat-button {
      padding: 8px 16px;
      font-size: 12px;
    }
  }