MUI Progress Indicator center align horizontally - css

Question

Stack: Meteor + React + MUI
Here's my full code of my 'main' renderer components:
// Sorry for not giving material-UI CSS,
// cause it cannot be served as stand-alone CSS
render() {
return (
<div className = "container">
<AppBar title = "test" />
<Tabs /> // Tab contents goes here
<RefreshIndicator
left={70} // Required properties
top={0} // Required properties
status="loading"
style={{
display: 'inline-block',
position: 'relative',
margin: '0 auto' }} />
</div>
);
},
I want to make Refresh Indicator horizontally center aligned beneath of myTabs like this whirling circle in this picture :
In the document of MUI here, this indicator comes with following styles:
display: 'inline-block',
position: 'relative',
With this styles I cant align it center horizontally, and without this styles, I can`t even locate it where I wanted.
What I have tried :
margin: 0 auto --> failed
text-align: center --> failed
display: flex --> failed
combination of 1 & 2 --> failed
left={$(window).width/2-20} --> This works but I'd like to use CSS only

Answer 1

The solution below centres progress indicator without any hacky calculations that cause element to be offset:
<div style={{display: 'flex', justifyContent: 'center'}}>
<RefreshIndicator status="loading" />
</div>

Answer 2

Here is how I did to ensure it's horizontally centered. Works great for me.
Set the parent component style to position: 'relative'.
Set the refresh indicator style to marginLeft: '50%', and left={-20} (assuming the size is 40).
here is the code (I put it in a CardText component).
...
<CardText style={{position: 'relative'}}>
<RefreshIndicator
size={40}
left={-20}
top={10}
status={'loading'}
style={{marginLeft: '50%'}}
/>
</CardText>
...

Answer 3

In MUI v5, there is a Stack component which serves as a flexbox container. By default the direction is column, to center it horizontally you can set alignItems to center:
<Stack alignItems="center">
<CircularProgress />
</Stack>
Live Demo

Answer 4

circularprocess in material ui and text middle of page stackoverflow
<div style={{ alignItems: "center", display: "flex", justifyContent: "center", height: "100vh", width: "100vw" }}>
<CircularProgress />
<span style={{ justifyContent: "center", position: "fixed", top: "55%" }}>Loading...please wait</span>
</div>[![enter image description here][1]][1]

Answer 5

The Backdrop Component will place the progress indicator in the center and also can add a dimmed layer over your application. This component is available with MUI V5.
<Backdrop open={enabled} sx={{ color: '#fff', zIndex: (theme) => theme.zIndex.drawer + 1 }}><CircularProgress color="secondary" /></Backdrop>