% macro sign_in_link(icon='', btn_cls='link')
    <form action="/sign-in" method="GET" {% if request.method not in constants.SAFE_METHODS
          %} target="_blank" {% endif %}>
        <button class="{{ btn_cls }}" name="back_to" value="{{ request.line.uri.decoded }}">
            {{- icon -}}
            <span class="text">{{ _("Log In or Create Account") }}</span>
        </button>
    </form>
% endmacro