title: How to change size of font in angular materiel form fields of floating place holder
body: <p>Below is the form field of angular material.
  How can I add 2 different customize font-size for placeholder when it's normal and when it floats.
  font-size : 20px; (When it is normal)
  font-size : 13px; (When it floats up and get smaller)</p>
  
  <pre><code> &lt;mat-form-field class="form-group example-full-width"&gt;
      &lt;input matInput id="Fname" placeholder="First" class=" " formControlName="FirstName"&gt;
      &lt;mat-error *ngIf="firstName.invalid" class=""&gt;First name is required&lt;/mat-error&gt;
      &lt;/mat-form-field&gt;
  </code></pre>