React Grid Layout Overlapping Items

How do I create a react-grid-layout with 100 grid points width and specify the width of the grid items in this so that they don't overlap?

(Note: reducing number of columns fixes this overlap issue, but then I don't have the 100 point resolution in width for grid placement)

import Button, { ButtonProps } from '@mui/material/Button';
import GridLayout from 'react-grid-layout';

const TempButton = (props: ButtonProps) => (
  <Button
    {...props}
    variant="outlined"
    sx={{
      width: '100%',
      height: '100%',
      '&:hover': {
        backgroundColor: 'primary.dark',
        opacity: [0.9, 0.8, 0.7],
      },
    }}
  />
);

export const DeckLayout = (props: any) => {
  const layout = [
    {
      i: '1',
      x: 0,
      y: 0,
      w: 2,
      h: 2,
    },
    {
      i: '2',
      x: 2,
      y: 0,
      w: 1,
      h: 1,
    },
    {
      i: '3',
      x: 3,
      y: 0,
      w: 2,
      h: 3,
    },
  ];

  return (
    <GridLayout className="layout" layout={layout} cols={100} rowHeight={10} width={500}>
      <div key="1">
        <TempButton>1</TempButton>
      </div>
      <div key="2">
        <TempButton>2</TempButton>
      </div>
      <div key="3">
        <TempButton>3</TempButton>
      </div>
    </GridLayout>
  );
};

Here's a sandbox

Edit: seems like it might be something with the CSS? when I modify the stock example it performs as expected:

here's the sandbox

UPDATE: As posted here, in order to get exact grid unit to pixel mapping, you need to set margin={[0,0]}

Sandbox

Yep, combination of css and thinking issues:

• MaterialUI has a default minWidth of 64px for a button.

• It seems the width of the columns are calculated as (Gridlayout width) / (Gridlayout cols). So in the above example the column width is 500px/ 100 cols = 5 px/col <<< minWidth = 64px

Fix:

width: 100%

height: 100%

<GridLayout
   className="layout"
   layout={layout}
   cols={100}
   rowHeight={10}
   width={6400}
>

Full fix:

import Button, { ButtonProps } from "@mui/material/Button";
import GridLayout from "react-grid-layout";

const TempButton = (props: ButtonProps) => (
  <Button
    {...props}
    variant="outlined"
    sx={{
      padding: 0,
      "&:hover": {
        backgroundColor: "primary.dark",
        opacity: [0.9, 0.8, 0.7]
      }
    }}
  />
);

export const DeckLayout = (props: any) => {
  const layout = [
    {
      i: "1",
      x: 0,
      y: 0,
      w: 2,
      h: 2
    },
    {
      i: "2",
      x: 2,
      y: 0,
      w: 1,
      h: 1
    },
    {
      i: "3",
      x: 3,
      y: 0,
      w: 2,
      h: 3
    }
  ];

  return (
    <GridLayout
      className="layout"
      layout={layout}
      cols={100}
      rowHeight={10}
      width={6400}
    >
      <div key="1">
        <TempButton>1</TempButton>
      </div>
      <div key="2">
        <TempButton>2</TempButton>
      </div>
      <div key="3">
        <TempButton>3</TempButton>
      </div>
    </GridLayout>
  );
};

and sandbox