ips: document.getElementById('stat-skips'),
          high: document.getElementById('stat-high'),
        },
        endMessage: document.getElementById('endMessage'),
      };

      const symbols = { add: '+', sub: '−', mul: '×', div: '÷' };
      let state = defaultState();
      // Force sepia theme
      document.documentElement.setAttribute('data-theme', 'sepia');

      function defaultState() {
        return {
          running: false,
          timeTotal: parseInt(els.duration.value, 10),
    