According to Adam Tomat's answer there was prepared a JSFiddle example to align the text in div:
<div class="cells-block">
text<br/>in the block
</div>
by using display:flex in CSS:
.cells-block {
display: flex;
flex-flow: column;
align-items: center; /* Vertically */
justify-content: flex-end; /* Horisontally */
text-align: right; /* Addition: for text's lines */
}
with another example and a few explanations in a blog post.