<h2 class="gradient-multiline"><span>Yes, this is possible to do with CSS!</span></h2>
body {
  font-family: -apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Droid Sans,Helvetica Neue,sans-serif;
  background-color: #fff;
}

.gradient-multiline {
  position: relative;
  width: 300px;
  margin: 40px auto;
  background-color: #fff;
  text-align: center;
  line-height: 1.5em;
  overflow:hidden;
}
  
.gradient-multiline span {
  color: #fff;
  background-color: #000;

  padding: 0.225rem 0.5rem;

  /* Needs prefixing */
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

@supports(mix-blend-mode: lighten) {
  
  .gradient-multiline::after {
    position: absolute;
    content: '';
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    pointer-events: none;
    background: linear-gradient(60deg, #3629a2, #00ceff);

    mix-blend-mode: lighten;
  }
  
}


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