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  <h1>Using w3-colors-signal</h1>
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<table class="w3-table w3-large">
  <tr><td class="w3-signal-yellow">w3-signal-yellow</td></tr>
  <tr><td class="w3-signal-orange">w3-signal-orange</td></tr>
  <tr><td class="w3-signal-red">w3-signal-red</td></tr>
  <tr><td class="w3-signal-violet">w3-signal-violet</td></tr>
  <tr><td class="w3-signal-blue">w3-signal-blue</td></tr>
  <tr><td class="w3-signal-green">w3-signal-green</td></tr>
  <tr><td class="w3-signal-grey">w3-signal-grey</td></tr>
  <tr><td class="w3-signal-brown">w3-signal-brown</td></tr>
  <tr><td class="w3-signal-white">w3-signal-white</td></tr>
  <tr><td class="w3-signal-black">w3-signal-black</td></tr>
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