#cols {

  -webkit-column-count: 3;

  -webkit-column-gap: 10px;

  -moz-column-count: 3;

  -moz-column-gap: 10px;

  column-count: 3;

  column-gap: 10px;

}



@media screen and (max-width: 700px) {

#cols {

  -webkit-column-count: 2;

  -webkit-column-gap: 10px;

  -moz-column-count: 2;

  -moz-column-gap: 10px;

  column-count: 2;

  column-gap: 10px;

}

}



@media screen and (max-width: 400px) {

#cols {

  -webkit-column-count: 1;

  -webkit-column-gap: 10px;

  -moz-column-count: 1;

  -moz-column-gap: 10px;

  column-count: 1;

  column-gap: 10px;

}

}



.item_ {

	margin: 0 0 10px 0;

	-webkit-column-break-inside: avoid;

	-moz-column-break-inside: avoid;

	column-break-inside: avoid;

}