I'm trying to add an orange accent to my banner text using the ::after psuedo element. 
goal:
I'm having two problems:
- getting - :afterto show up when content is empty
- stacking the - :afterbetween the parent element and image. I've tried specifying z-indexes
(I forced the :after to appear by putting dummy content so the stacking problem is shown)
html
<div className="hero-banner">
      <div className="hero-banner-content">
        <img src={img0} alt="image"/>
        <div className="hero-banner-text">
          <span className="highlighted">Master</span>
          <span>the art of performance</span>
        </div>
      </div>
    </div>
scss
.hero-banner {
  position: relative;
  top: 0;
  left: 0;
  height: 100vh;
  .hero-banner-content {
    position: relative;
    top: -70px;
    width: 100%;
    img {
      object-fit: cover;
      width: 100%;
      height: 100vh;
      z-index: 1;
    }
    .hero-banner-text {
      padding: 0 24px;
      color: #FFFFFF;
      font-size: 54px;
      font-weight: $fw-bold;
      width: 361px;
      position: absolute;
      top: 237px;
      left: 192px;
      .highlighted {
        font-size: 96px;
        display: block;
      }
      > * {
        text-transform: uppercase;
        z-index: 4;
      }
      &:after {
        content: "_____";
        height: 32px;
        width: 200px;
        background-color: $orange;
        opacity: 0.4;
        position: relative;
        top: 32px;
        left: -432px;
        z-index: 2;
      }
    }
  }
}


