CSS Ray Function Contain

<!DOCTYPE html>
<title>My Example</title>

.ray-box {
    position: relative;
    width: 150px;
    height: 150px;
    background-color: #e9ecef;
    border: 2px solid #343a40;
  }
  
  .ray-box::before {
    content: attr(data-label);
    position: absolute;
    top: -25px;
    left: 0;
    width: 100%;
    text-align: center;
    font-family: sans-serif;
    font-size: 0.85em;
    font-weight: bold;
    white-space: nowrap;
  }

.moving-element {
    width: 40px;
    height: 40px;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: sans-serif;
    font-size: 0.7em;
    font-weight: bold;
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    animation: shootRayCompare 2.5s ease-in-out infinite alternate;
  }

/* Without contain: Shoots out of the box */
  .no-contain {
    background-color: #d9534f;
    offset-path: ray(135deg farthest-corner);
  }

/* With contain: Stops at the corner */
  .with-contain {
    background-color: #5cb85c;
    offset-path: ray(135deg farthest-corner contain);
  }

@keyframes shootRayCompare {
    0% {
      offset-distance: 0%;
    }
    100% {
      offset-distance: 100%;
    }
  }
</style>