<h1 style="font-weight:400">Am I bold? (this on is not)</h1>
<h1>Am I bold? (this is fake bold)</h1>
<p>
  This is <strong>fake bold</strong> and
  <em>fake oblique (italic)</em>.
</p>

@import url("https://fonts.googleapis.com/css2?family=Montserrat&display=swap");

body {
  font-family: "Montserrat", sans-serif;
}