<!-- By Sam Herbert (@sherb), for everyone. More @ http://goo.gl/7AJzbL -->
<svg width="38" height="38" viewBox="0 0 38 38" xmlns="http://www.w3.org/2000/svg" stroke="#fff">
    <g fill="none" fill-rule="evenodd">
        <g transform="translate(1 1)" stroke-width="2">
            <circle stroke-opacity=".5" cx="18" cy="18" r="18"/>
            <path d="M36 18c0-9.94-8.06-18-18-18">
                <animateTransform attributeName="transform" type="rotate" from="0 18 18" to="360 18 18" dur="1s" repeatCount="indefinite"/>
            </path>
        </g>
    </g>
</svg>