* {
    box-sizing: border-box;
}



/* Add padding BETWEEN each column 

.row {
    margin: 10px -16px;
}


*/
.row,
.row > .column {
    padding: 6px;
}

/* 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;
}

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

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

.btn:hover {
  background-color: #ddd;
}

.btn.active {
  background-color: #666;
  color: white;
}
  .hover_img a {
            position: relative;
        }

            .hover_img a span {
                position: absolute;
                display: none;
                
                z-index: 99;
            }

            .hover_img a:hover span {
                display: block;
            }
            
             .iframe-container {    
    padding-bottom: 60%;
    padding-top: 30px; height: 0; overflow: hidden;
}
 
.iframe-container iframe,
.iframe-container object,
.iframe-container embed {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
.myimg
{
    valign:middle;
    align:left;
    width:120px; 
    height:120px;
    padding:10px 10px 10px 10px;
    
    
    }