<h1>Text</h1>
<svg>
  <defs>
    <filter id="stroke-1">
      <feMorphology operator="dilate" radius="10" in="SourceAlpha" result="morphed"/>
      <feFlood flood-color="#704918" result="stroke"/>
      <feComposite in="stroke" in2="morphed" operator="in" result="stroke-filled"/>

      <feMerge>
        <feMergeNode in="stroke-filled"/>
        <feMergeNode in="SourceGraphic"/>
      </feMerge>
    </filter>
  </defs>
</svg>

h1 {
  filter: url(#stroke-1);
  font-family: sans-serif;
  font-size: 10rem;
  text-transform: uppercase;
  background: linear-gradient(45deg, #F00, #00F);
  background-clip: text;
  color: #FFF0;
  width: fit-content;
}