sharepoint online – Create a webpart with typescript / sass

I created a webpart for a footer and I have to insert an image in the footer and I can’t get it to display. I am using typescript and sass. It is my first webpart!

 <p class="${styles.subTitle}"><img src="logo.png" alt="">INTRANET | Tritec Intervento  </p>

y en sass:

  .subTitle {
    margin-right: 10px;
    @include ms-fontColor-white;
  }