ul.tagcloud {
  list-style: none;
    padding: 0;
}

ul.tagcloud li {
    display: inline-block;
}

li.tag-1 {
    font-size: 150%;
}

li.tag-2 {
    font-size: 120%;
}

...

ul.tagcloud .list-group-item <span>.badge {
    background-color: grey;
    color: white;
}

/* Responsive iFrame */
 
.responsive-iframe-container {
    position: relative;
    padding-bottom: 56.25%;
    padding-top: 30px;
    height: 0;
    overflow: hidden;
}
 
.responsive-iframe-container iframe,   
.vresponsive-iframe-container object,  
.vresponsive-iframe-container embed {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}