body {
      margin: 0;
      padding: 0;
    }

    .header {
      background-color: #333;
      color: #fff;
      padding: 20px;
      text-align: center;
    }

   .navbar {
  background-color: #333;
  overflow: hidden;
}

.navbar a {
  float: left;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

.dropdown {
  float: left;
  overflow: hidden;
}

.dropdown .dropbtn {
  font-size: 16px;
  border: none;
  outline: none;
  color: #f2f2f2;
  background-color: inherit;
  margin: 0;
  padding: 14px 16px;
  cursor: pointer;
}

.dropdown-content {
  display: none;
  position: absolute;
  background-color: #f9f9f9;
  min-width: 160px;
  box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
  z-index: 1;
}

.dropdown-content a {
  color: black;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
}

.dropdown:hover .dropdown-content {
  display: block;
}

.icon {
  display: none;
}

@media screen and (max-width: 600px) {
  .navbar a:not(:first-child), .dropdown .dropbtn {
    display: none;
  }
  .navbar a.icon {
    float: right;
    display: block;
  }
}

@media screen and (max-width: 600px) {
  .navbar.responsive {
    position: relative;
  }
  .navbar.responsive .icon {
    position: absolute;
    right: 0;
    top: 0;
  }
  .navbar.responsive a {
    float: none;
    display: block;
    text-align: left;
  }
  .navbar.responsive .dropdown {
    float: none;
  }
  .navbar.responsive .dropdown-content {
    position: relative;
  }
  .navbar.responsive .dropdown .dropbtn {
    display: block;
    width: 100%;
    text-align: left;
  }
}


  .card {
    width: calc(33.33% - 20px); /* Adjust the desired width based on the number of cards per row */
    margin: 10px;
    padding: 5px;
    box-sizing: border-box;
    border: 1px solid #000; /* Add border styling */
   /* border-radius: 10px; /* Add rounded corners */   
    float: left;
  }

  @media (max-width: 1200px) {
    .card {
      width: calc(50% - 20px);
      float: left;
    }
  }

  @media (max-width: 600px) {
    .card {
      width: calc(100% - 20px);
    }
    .header {
    display: none;
    }
  }
    .clearfix::after {
      content: "";
      display: table;
      clear: both;
    }

     .header {
      background-color: blue;
      color: #fff;
      padding: 30px;
      font-size:24px;
      text-align: center;
      clear: both;
    }

    .footer {
      background-color: #333;
      color: #fff;
      padding: 20px;
      text-align: center;
      clear: both;
    }