Untitled

  <body>
    <div class="share_container">
      <div class="close">
        <a id="close" href="#"></a>
        <div class="instruction"></div>
      </div>
      <div class="cover">
        <div class="instruction"></div>
      </div>
    </div>
    <div id="shade">
      <div class="dim"></div>
      <div class="dim"></div>
    </div>
    <a id="lightswitch" href="#"></a>
    <button id="share" href="#"></button>
    <div id="chalkboard">
      <img id="output">
      <canvas id="canvas"></canvas>
      <div id="ledge">
        <div id="targets">
          <a id="red_chalk" class="chalk"></a>
          <a id="white_chalk" class="chalk"></a>
          <a id="eraser"></a>
        </div>
        <div id="tools">
          <div id="red_chalk_tool" class="tool chalk">
            <div class="indicator"></div>
          </div>
          <div id="white_chalk_tool" class="tool chalk">
            <div class="indicator"></div>
          </div>
          <div id="eraser_tool" class="tool eraser">
            <div class="indicator"></div>
          </div>
        </div>
      </div>
    </div>
  </body>