I've been struggling to center text inside a paper component in Material UI, and nothing seems to be working. I attempted using display:flex in the parent component with align-items:center in the child component. I also tried adding padding:5px for equal spacing, but it didn't have any effect. Additionally, I experimented with text-align and vertical-align properties, but they too failed to produce the desired result. Here is how it currently appears: https://i.stack.imgur.com/HbwCL.png
My goal is to horizontally center the text within the three bottom boxes (paper components in Material-UI).
https://codesandbox.io/s/lingering-snowflake-grvxg?file=/src/App.js