HelpLink

css.txt

 <link href="https://fonts.googleapis.com/css?family=Quicksand:300,500" rel="stylesheet">
  <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">

material.css

/* fallback */
@font-face {
  font-family: 'Material Icons';
  font-style: normal;
  font-weight: 400;
  src: url(https://fonts.gstatic.com/s/materialicons/v43/flUhRq6tzZclQEJ-Vdg-IuiaDsNcIhQ8tQ.woff2) format('woff2');
}

.material-icons {
  font-family: 'Material Icons';
  font-weight: normal;
  font-style: normal;
  font-size: 24px;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  display: inline-block;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  -webkit-font-feature-settings: 'liga';
  -webkit-font-smoothing: antialiased;
}

navbar.component.css

nav {
    background: #e2d305;
    height: 100%;
  }
  nav ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
  }
  nav ul li a {
    color: rgb(15, 15, 15);
    padding: 20px;
    display: block;
  }
  nav ul li .activated {
    background-color: #f2f2f2;
  }

navbar.component.html

<nav>
  <ul>
    <li>
      <a routerLink="" routerLinkActive="activated" [routerLinkActiveOptions]="{exact:
        true}">
        <i class="material-icons">local_movies</i>
      </a>
    </li>
    <li>
      <a routerLink="my-tickets" routerLinkActive="activated" [routerLinkActiveOptions]="{exact:
        true}">
        <i class="material-icons">receipt</i>
      </a>
    </li>
    <li>
      <a routerLink="about" routerLinkActive="activated" [routerLinkActiveOptions]="{exact:
        true}">
        <i class="material-icons">info</i>
      </a>
    </li>
  </ul>
</nav>