HTML example:

<!-- Preloader-Content -->
<div class="preloader">
    <svg viewBox="-2000 -1000 4000 2000">
        <path id="inf" d="M354-354A500 500 0 1 1 354 354L-354-354A500 500 0 1 0-354 354z"></path>
        <use xlink:href="#inf" stroke-dasharray="1570 5143" stroke-dashoffset="6713px"></use>
    </svg>
</div>

Output