#photos {
/* Prevent vertical gaps */
line-height: 0px;

-webkit-column-count: 2;
-webkit-column-gap:   0px;
-moz-column-count:    2;
-moz-column-gap:      0px;
column-count:         2;
column-gap:           0px;  
}

#photos a img {
    /* Just in case there are inline attributes */
    width: 100% !important;
    height: auto !important;
    padding:3px;
}