*, *:before, *:after {box-sizing:  border-box !important;}

#grid.row {
 -moz-column-width: 18em;
 -webkit-column-width: 18em;
 -moz-column-gap: 1em;
 -webkit-column-gap:1em; 
  
}

#grid .item {
 display: inline-block;
 padding:  .25rem;
 width:  100%; 
}

#grid .well {
 position:relative;
 display: block;
}

footer {
    margin: 5em 0;
}