Align read more button to the bottom in block extended layout

Use the following code snippet

.et_pb_post_extra.el_dbe_block_extended {
	display: flex;
        flex-direction: column;
}
.et_pb_post_extra.el_dbe_block_extended .post-content {
	display: flex;
	flex-direction: column;
	flex-grow: 1;
        padding: 30px;
}
.et_pb_post_extra.el_dbe_block_extended .post-content .post-data {
        flex-grow: 1;
}