Ephigenia/circleboard2

<nav class="navbar navbar-fixed-top navbar-light bg-light" [ngClass]="{
  'navbar-dark': theme === 'dark',
  'bg-dark': theme === 'dark'
}">
  <span class="navbar-brand mb-0 h1" [routerLink]="['/']">CircleBoard 3.0.0-alpha.5</span>

  <div class="text-right">
    <div class="btn-group" role="group" aria-label="set font size">
      <button
        class="btn btn-outline-secondary"
        title="increase font size"
        (click)="increaseFontSize()"
      >
        <i class="fa fa-search-plus" aria-hidden="true"></i>
      </button>
      <button
        class="btn btn-outline-secondary"
        title="decrease font size"
        (click)="decreaseFontSize()"
      >
        <i class="fa fa-search-minus" aria-hidden="true"></i>
      </button>
    </div>
    <button class="btn btn-outline-secondary" title="adjust all settings" [routerLink]="['/config']">
      <i class="fa fa-cog" aria-hidden="true"></i>
    </button>
  </div>
</nav>