v row center vertically

1Vertical - align: start, center, end, baseline, stretch
2Horizontal - justify: start, cener, end, space-around, space-between
3
4Vertical Alignment: 
5<v-row align="start"></v-row> // top
6<v-row align="center"></v-row> // middle
7<v-row align="end"></v-row> // bottom
8<v-row align="stretch"></v-row> // fill height
9
10
11Horizontal Justification:
12<v-row justify="start"></v-row> // left
13<v-row justify="center"></v-row> // center
14<v-row justify="end"></v-row> // right
15<v-row justify="space-around"></v-row> // centered - spaced evenly around
16<v-row justify="space-between"></v-row> // not centered - spaced evenly between

1<v-row justify="center"></v-row>

1<v-row align="center"></v-row>