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Insecure Resource

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CSS

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JavaScript

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Babel includes JSX processing.

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HTML 

              
                <div id="keyboard">
  <div id="small-row">
    <div class="key">Esc</div>
  
    <div class="key">F1</div>
    <div class="key">F2</div>
    <div class="key">F3</div>
    <div class="key">F4</div>

    <div class="key">F5</div>
    <div class="key">F6</div>
    <div class="key">F7</div>
    <div class="key">F8</div>

    <div class="key">F9</div>
    <div class="key">F10</div>
    <div class="key">F11</div>
    <div class="key">F12</div>

    <div class="key font-small">Prt Sc<br>Sys Rq</div>
    <div class="key font-small">Pause<br>Break</div>
    <div class="key font-small">Insert<br>Num Lk</div>
    <div class="key font-small">Delete<br>Scr Lk</div>

    <div class="clear"></div>
  </div>
  
  <div class="key">~<br>`</div>
  <div class="key">!<br>1</div>
  <div class="key">@<br>2</div>
  <div class="key">#<br>3</div>
  <div class="key">$<br>4</div>
  <div class="key">%<br>5</div>
  <div class="key">^<br>6</div>
  <div class="key">&<br>7</div>
  <div class="key">*<br>8</div>
  <div class="key">(<br>9</div>
  <div class="key">)<br>0</div>
  <div class="key">_<br>-</div>
  <div class="key">+<br>=</div>
  <div class="key long-2">Backspace</div>
  <div class="clear"></div>
  
  <div class="key long-1">Tab</div>
  <div class="key">Q</div>
  <div class="key">W</div>
  <div class="key">E</div>
  <div class="key">R</div>
  <div class="key">T</div>
  <div class="key">Y</div>
  <div class="key">U</div>
  <div class="key">I</div>
  <div class="key">O</div>
  <div class="key">P</div>
  <div class="key">{<br>[</div>
  <div class="key">}<br>]</div>
  <div class="key long-1">|<br>\</div>
  <div class="clear"></div>
  
  <div class="key long-2">Caps Lock</div>
  <div class="key">A</div>
  <div class="key">S</div>
  <div class="key">D</div>
  <div class="key">F</div>
  <div class="key">G</div>
  <div class="key">H</div>
  <div class="key">J</div>
  <div class="key">K</div>
  <div class="key">L</div>
  <div class="key">:<br>;</div>
  <div class="key">"<br>'</div>
  <div class="key long-3">Enter</div>
  <div class="clear"></div>
  
  <div class="key long-3">Shift</div>
  <div class="key">Z</div>
  <div class="key">X</div>
  <div class="key">C</div>
  <div class="key">V</div>
  <div class="key">B</div>
  <div class="key">N</div>
  <div class="key">M</div>
  <div class="key"><<br>,</div>
  <div class="key">><br>.</div>
  <div class="key">?<br>/</div>
  <div class="key long-3" style="width:216px">Shift</div>
  <div class="clear"></div>
  
</div>
<div class="clear"></div>
!

CSS 

              
                @keyboard-bg: #414149;

.left { float: left; }
.right { float: right; }
.clear { clear: both; }

.push-left { margin-right: 10px; }
.push-down { margin-bottom: 10px; }

#keyboard {
  background-color: @keyboard-bg;
  padding: 10px;
  border-radius: 5px;
  width: 1326px;
  font-family: Arial, sans-serif;
  .key {
    .push-left;
    .push-down;
    cursor: default;
    border-radius: 3px;
    background: #6a6a72;
background: -moz-linear-gradient(top,  #6a6a72 0%, #6a6a72 3%, #414149 3%, #414149 3%, #414149 97%, #303038 97%, #303038 100%);
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#6a6a72), color-stop(3%,#6a6a72), color-stop(3%,#414149), color-stop(3%,#414149), color-stop(97%,#414149), color-stop(97%,#303038), color-stop(100%,#303038));
background: -webkit-linear-gradient(top,  #6a6a72 0%,#6a6a72 3%,#414149 3%,#414149 3%,#414149 97%,#303038 97%,#303038 100%);
background: -o-linear-gradient(top,  #6a6a72 0%,#6a6a72 3%,#414149 3%,#414149 3%,#414149 97%,#303038 97%,#303038 100%);
background: -ms-linear-gradient(top,  #6a6a72 0%,#6a6a72 3%,#414149 3%,#414149 3%,#414149 97%,#303038 97%,#303038 100%);
background: linear-gradient(to bottom,  #6a6a72 0%,#6a6a72 3%,#414149 3%,#414149 3%,#414149 97%,#303038 97%,#303038 100%);
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#6a6a72', endColorstr='#303038',GradientType=0 );
    display: block;
    float: left;
    width: 60px;
    height: 52px;
    border: 2px solid #1f1e24;
    color: #d4d1da;
    padding: 6px 8px;
    font-size: 16px;
    &.font-small {
      font-size: 14px;
    }
    &.long-1 {
      width: 93px;
    }
    &.long-2 {
      width: 126px;
    }
    &.long-3 {
      width: 150px;
    }
    &:hover,
    &.selected {
      background: #414149;
      color: darken(#d4d1da,10%);
    }
  }
}

#small-row .key {
  width: 48px;
  height: 41px;
  font-size: 14px;
}
!

JS 

              
                var keys = document.querySelectorAll('div.key'),
    specialKeys = ["U+001B","F1","F2","F3","F4","F5","F6","F7","F8","F9","F10","F11","F12",];
window.addEventListener('keydown',function(e){
  e.preventDefault();
  var keycode = String.fromCharCode(e.keyCode).toUpperCase();
  for(key in keys){
    if(keys[key].innerHTML == keycode){
      keys[key].className = keys[key].className + ' selected';
      break;
    }
  }
});

window.addEventListener('keyup',function(e){
  e.preventDefault();
  console.log(e);
  var keycode = String.fromCharCode(e.keyCode).toUpperCase();
  for(key in keys){
    if(keys[key].innerHTML == keycode){
      keys[key].className = keys[key].className.replace(' selected','');
      break;
    }
  }
});
!
999px

Console