Centering text body to bottom center of the screen

I'm not allowing a scrolling function, the background will be static, but i'm finding it difficult getting the passages to stick to the very center-bottom of the screen. any ideas on how to fix it? Text alignment in general is a bit of a fuss, especially after i try to adjust the line-height

here's the code i'm working with

#passages {
margin-left: 0px;
margin-right: 0;
padding-left: 0px;
border: none;
text-align: bottom;
}

.passage { max-width: 350px;
background-color: transparent;
text-align: justify;
font-size: 13px;
margin-left: auto;
margin-right: auto;
}