You can use the outlined version of the icons by loading the outlined Material Icons font and setting the respective font-family via CSS:
- Link the font. The recommended way to use the Material Icons font is by linking to the web font hosted on Google Fonts:
<!-- https://material.io/resources/icons/?style=outline -->
<link href="https://fonts.googleapis.com/css2?family=Material+Icons+Outlined"
rel="stylesheet">
- Set the font-family. To change the icons' font-family, add the following CSS:
.rzi {
font-family: "Material Icons Outlined";
}