css - How to reset height of containers? -

on page http://pjstagingdecorating.com/home-staging-level-2/ when resize browser simulate narrow screen, there large space between each row. think because containers each set height of 418px. have used following css change height of containers auto it's not working. help.

.dtp-item-block.dt-portfolio-grid-item.dt_portfolio_grid_6.1.omega { height:auto!important; }  .dtp-item-block.dt-portfolio-grid-item.dt_portfolio_grid_6.1 { height:auto!important; } 

remove inline style style="height: 444px;" div with

class="dtp-item-block"