* {
    box-sizing: border-box;
  }

  body {
    /* background-color: #f1f1f1; */
    background-color: rgb(67, 108, 245);
    padding: 20px;
    font-family: Arial;
  }

  /* Center website */
  .main {
    max-width: 1300px;
    width: 100%;
    margin: auto;
  }

  h1 {    color: rgb(248, 252, 248);   
    text-align: center;
    font-size: 3em;
    word-break: break-all;
    text-shadow: 10px 10px 10px #555;
   }
h4 {
    text-align:center;
    color: green;
    text-shadow:5px 5px 10px grey;
}
p {
    text-align:center;
    font-size:15px;
    color: #555;
}

  .row {
    margin: 0px -16px;
  }

  /* Add padding BETWEEN each column */
  .row,
  .row>.column {
    padding: 10px;
  }

  /* Create three equal columns that floats next to each other */
  .column {
    float: left;
    width: 33.33%;
    display: none;
    /* Hide all elements by default */
  }

  /* Clear floats after rows */
  .row:after {
    content: "";
    display: table;
    clear: both;
  }

  /* Content */
  .content {
    background-color: white;
    padding: 10px;
    height:420px;
  }

  .content img {
    height: 300px;
    width: 200px;
    transition: 1s;
  }

  .content img:hover {
    transform: scale(1.1);
  }

  /* The "show" class is added to the filtered elements */
  .show {
    display: block;
  }

  /* Style the buttons */
  .btn {
    border: none;
    outline: none;
    padding: 20px 13px;
    margin-top: 20px;
    background-color: rgb(236, 231, 234);
    color:green;
    cursor: pointer;
  }

  .btn:hover {
    background-color: rgb(43, 168, 11);
    color:white;
  }

  .btn.active {
    background-color: #666;
    color: white;
  }

  @media only screen and (max-width:1000px) {
    .content {
        height: 320px;
    }
    .content img {
      height: 200px;
      width: 180px;
    }
    h1{font-size: 2.5em;}
    h4 {
      font-size: .8rem;
    }
  }

  @media only screen and (max-width:600px) {
      .content {
        height: 240px;
    }
    .content img {
      height: 150px;
      width: 150px;
    }

    h4 {
      font-size: .8rem;
    }
    p {
        font-size: .8rem;
    }
  }

  @media only screen and (max-width:500px) {
    .content {
        height: 150px;
    }
    .content img {
      height: 80px;
      width: 60px;
    }
    h1{font-size: 1.5em;}
    h4 {
      font-size: .5rem;
    }
     p {
        font-size: .5rem;
    }
  }