Font Size

I really need to change the font size on my Matrix. Where do I do this??? Everything else changes but not this.

To change the fonts in a matrix, try custom CSS codes (follow this guide How-to-Inject-Custom-CSS-Codes)

See this example, adjust the font size accordingly, you can add a weight to make it bolder, otherwise, delete that line.

.form-matrix-column-headers, .form-matrix-row-headers {

font-size: 14px;

font-weight: bolder;

}