将interation-countinfinite添加到typing和blink-caret动画中。如果要从后退方向重新启动动画，可以使用alternate。

.typewriter {
  overflow: hidden;
  /* Ensures the text is not visible until animation starts */
  border-right: 0.15em solid orange;
  /* Creates the blinking cursor */
  white-space: nowrap;
  /* Keeps the text on a single line */
  /* margin: 0 auto; */
  /* Centers the element */
  letter-spacing: 0.15em;
  /* Adds a slight space between characters */
  animation: typing 3.5s steps(40, end) infinite alternate, blink-caret 0.75s step-end infinite alternate;
  /* Sets the animation for the typing and blinking cursor */
}

@keyframes typing {
  from {
    width: 0;
  }
  /* Starts with no width */
  to {
    width: 100%;
    max-width: fit-content;
  }
  /* Increases width to 100% */
}

@keyframes blink-caret {
  from,
  to {
    border-color: transparent;
  }
  /* Starts and ends with transparent border */
  50% {
    border-color: orange;
  }
  /* Changes border color to orange at 50% */
}

<div>
  <h1 style="font-size: 26px">Food Made With Love</h1>

  <p style="font-size: 18px" class="typewriter">
    Goo's Delights is a modern Boulder hotspot. Originally opened in 2015, Goo's Delights has been given numerous awards displaying their outstanding service and commitment to quality food. Goo's Delights is commited to bringing the community together, all
    while providing the best food possible. Contact us for more info.
  </p>
</div>