* {
  box-sizing: border-box;
}

/* body {
  background-color: #f1f1f1;
  padding: 20px;
  font-family: Arial;
} */

/* Center website */
/* .main {
  max-width: 1000px;
  margin: auto;
} */

h1 {
  font-size: 50px;
  word-break: keep-all;
}

.row {
  margin: 8px -16px;
}

/* Add padding BETWEEN each column (if you want) */
.row,
.row > .column {
  padding: 8px;
}

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

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

/* Content */
.content {
  background-color: rgba(0, 0, 0, 0.5);
  padding: 10px;
}

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

/* Style the buttons */
.btn {
  border: none;
  outline: none;
  padding: 12px 16px;
  background-color: white;
  cursor: pointer;
}

/* Add a grey background color on mouse-over */
.btn:hover {
  background-color: #ddd;
}

/* Add a dark background color to the active button */
.btn.active {
  background-color: #666;
   color: white;
}


/* Reduce tile per column with smaller screens. */
@media screen and (max-width: 900px){
  .column{
    float: center;
    width: 50%;
  }
} 

@media screen and (max-width: 450px) {
.column {
  float: center;
  width: 100%;
  }
}