.grid-three-layout .post {
width: calc( 33.33% - 14px );
float: left;
}

.grid-three-layout .post:nth-of-type(3n-1), .grid-three-layout .post:nth-of-type(3n-2) { margin-right: 21px }

.grid-three-layout .clearfix:nth-of-type(3n-1), .grid-three-layout .clearfix:nth-of-type(3n-2) { display: none }


bu kodla 3 tane yazıyı yan yana yapıyorum. 4 tane yan yana nasıl yaparım?