.post-40 .et_pb_section:nth-child(4) .et_pb_button {
    } 

.post-40 .et_pb_section:nth-child(4) .et_pb_row:nth-child(2) .et_pb_column:nth-child(3) {
    } 


@media screen and (max-width: 768px) { .post-40 .et_pb_section:nth-child(4) .et_pb_button {   text-align: center!important; }  }  
@media screen and (max-width: 768px) { .post-40 .et_pb_section:nth-child(4) .et_pb_row:nth-child(2) .et_pb_column:nth-child(3) {   text-align: center!important; }  }