title: Style Material UI textfield
body: <p>I'm trying to style a material-ui textfield but I don't get it to work the way I want. I just want a plain simple white input field with standard MUI animations. I want the textfield to always have a white background and text to be black.</p>
  
  <p>You find the code on Code Sandbox: <a href="https://codesandbox.io/s/material-demo-2coo8?fontsize=14&amp;hidenavigation=1&amp;theme=dark" rel="nofollow noreferrer">https://codesandbox.io/s/material-demo-2coo8?fontsize=14&amp;hidenavigation=1&amp;theme=dark</a></p>
  
  <p>Thanks in advance!</p>