@media only screen and (min-width:600px){.two-column{-moz-column-count:2;-moz-column-gap:1em;-webkit-column-count:2;-webkit-column-gap:1em;column-count:2;column-gap:1em}}@media only screen and (min-width:600px){.three-column{-moz-column-count:3;-moz-column-gap:1em;-webkit-column-count:3;-webkit-column-gap:1em;column-count:3;column-gap:1em}}