Set center: false cannot align everything to the left

[fuzihaofzh]

Describe the bug
When set center to false, it still algin everything as center.

Samples to Reproduce

---
margin: 0
width: 1920
height: 1200
center: false
---
## Title
This is a test

Expected behavior
I hope Title and the text will be aligned to the most left. However, they are still at the center of the screen.

[stoweboyd]

I have the same problem

[MSzturc]

will be fixed with next version

[stefanopagliari]

@MSzturc thank you for fixing this.

I have a question regarding the functioning of this feature.
If I set center: false in the YAML, how do I ensure that H1 and figures remain entered? I have a custom css file but I'm not particularly familiar with CSS and whether the values in that file would be overridden by center:false

[MSzturc]

When you set center = false the parent container of a slide and all grid elements gets the style align-items: start otherwise whenn center not set or true, then align-items will be undefined (which means that it will align center by default)