Single element search icon CSS - when you can not change the markup and want to make a icon out of <input type="submit">

search-icon.css

.search-submit { /* Single element search icon, no pseudo elements */
  width: 15px;
  height: 15px;
  border: 2px solid; /* Not specifying color means border + box-shaddow gets currentColor (font color) */
  border-radius: 100%;
  box-shadow: 6px 6px 0 -6px, 7px 7px 0 -6px;
  background: none;
  color: inherit;
  font-size: 0; /* Hide text */
  padding: 0;
}