How to turn Grid Extended layout in 2 columns?

To turn Grid Extended layout in 2 columns move to WordPress Dashboard >> Divi >> Theme Options >> Custom CSS >> add below code snippet.

.et_pb_column_4_4 .et_pb_post_extra.el_dbe_grid_extended
{ 
margin-right: 0 !important; border-radius: 0; margin-bottom: 0; 
}
.el-dbe-blog-extra {
    display: flex;
    flex-wrap: wrap;
}
 @media screen and (min-width: 767px)
{ 
.et_pb_column_4_4 .et_pb_post_extra.el_dbe_grid_extended
{ 
margin-left: 2%;
   width: 48% !important;
    float: left;
    margin-bottom: 20px;


} 
}