salix/front/core/components/spinner/spinner.html

<div class="loader">
    <svg class="circular" viewBox="25 25 50 50">
    <circle
        class="path"
        cx="50"
        cy="50"
        r="20"
        fill="none"
        stroke="currentColor"
        stroke-miterlimit="10">
    </circle>
    </svg>
</div>