.news{
    width: -moz-calc(33.33% - 6px);
    width: -webkit-calc(33.33%  - 6px);
    width: -o-calc(33.33%  - 6px);
    width: calc(33.33%  - 6px);

    height: -moz-calc(35% - 6px);
    height: -webkit-calc(35% - 6px);
    height: -o-calc(35% - 6px);
    height: calc(35% - 6px);
}
#news_1, #news_5{
    width: -moz-calc(100% - 6px);
    width: -webkit-calc(100%  - 6px);
    width: -o-calc(100%  - 6px);
    width: calc(100%  - 6px);
    
    height: -moz-calc(32.5% - 6px);
    height: -webkit-calc(32.5% - 6px);
    height: -o-calc(32.5% - 6px);
    height: calc(32.5% - 6px);
}