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              <div id="options">
	<div id="filters" class="button-group js-radio-button-group">
	    <button class="button is-checked" data-filter="*">show all</button>
	    <button class="button" data-filter=".metal">metal</button>
	    <button class="button" data-filter=".transition">transition</button>
		<button class="button" data-filter=".nonmetal">nonmetal</button>
	  </div>
</div>

<div class="isotope">
  <div class="item transition metal">
    <h3 class="name">Mercury</h3>
    <p class="symbol">Hg</p>
    <p class="number">80</p>
    <p class="weight">200.59</p>
  </div>
  <div class="item metalloid ">
    <h3 class="name">Tellurium</h3>
    <p class="symbol">Te</p>
    <p class="number">52</p>
    <p class="weight">127.6</p>
  </div>
  <div class="item post-transition metal ">
    <h3 class="name">Bismuth</h3>
    <p class="symbol">Bi</p>
    <p class="number">83</p>
    <p class="weight">208.980</p>
  </div>
  <div class="item post-transition metal ">
    <h3 class="name">Lead</h3>
    <p class="symbol">Pb</p>
    <p class="number">82</p>
    <p class="weight">207.2</p>
  </div>
  <div class="item transition metal ">
    <h3 class="name">Gold</h3>
    <p class="symbol">Au</p>
    <p class="number">79</p>
    <p class="weight">196.967</p>
  </div>
  <div class="item alkali metal ">
    <h3 class="name">Potassium</h3>
    <p class="symbol">K</p>
    <p class="number">19</p>
    <p class="weight">39.0983</p>
  </div>
  <div class="item alkali metal ">
    <h3 class="name">Sodium</h3>
    <p class="symbol">Na</p>
    <p class="number">11</p>
    <p class="weight">22.99</p>
  </div>
  <div class="item transition metal ">
    <h3 class="name">Cadmium</h3>
    <p class="symbol">Cd</p>
    <p class="number">48</p>
    <p class="weight">112.411</p>
  </div>
  <div class="item alkaline-earth metal ">
    <h3 class="name">Calcium</h3>
    <p class="symbol">Ca</p>
    <p class="number">20</p>
    <p class="weight">40.078</p>
  </div>
  <div class="item transition metal ">
    <h3 class="name">Rhenium</h3>
    <p class="symbol">Re</p>
    <p class="number">75</p>
    <p class="weight">186.207</p>
  </div>
  <div class="item post-transition metal ">
    <h3 class="name">Thallium</h3>
    <p class="symbol">Tl</p>
    <p class="number">81</p>
    <p class="weight">204.383</p>
  </div>
  <div class="item metalloid ">
    <h3 class="name">Antimony</h3>
    <p class="symbol">Sb</p>
    <p class="number">51</p>
    <p class="weight">121.76</p>
  </div>
  <div class="item transition metal ">
    <h3 class="name">Cobalt</h3>
    <p class="symbol">Co</p>
    <p class="number">27</p>
    <p class="weight">58.933</p>
  </div>
  <div class="item lanthanoid metal inner-transition ">
    <h3 class="name">Ytterbium</h3>
    <p class="symbol">Yb</p>
    <p class="number">70</p>
    <p class="weight">173.054</p>
  </div>
  <div class="item noble-gas nonmetal ">
    <h3 class="name">Argon</h3>
    <p class="symbol">Ar</p>
    <p class="number">18</p>
    <p class="weight">39.948</p>
  </div>
  <div class="item diatomic nonmetal ">
    <h3 class="name">Nitrogen</h3>
    <p class="symbol">N</p>
    <p class="number">7</p>
    <p class="weight">14.007</p>
  </div>
  <div class="item actinoid metal inner-transition ">
    <h3 class="name">Uranium</h3>
    <p class="symbol">U</p>
    <p class="number">92</p>
    <p class="weight">238.029</p>
  </div>
  <div class="item actinoid metal inner-transition ">
    <h3 class="name">Plutonium</h3>
    <p class="symbol">Pu</p>
    <p class="number">94</p>
    <p class="weight">(244)</p>
  </div>
</div>
            
          
!
            
              		* {
  -webkit-box-sizing: border-box;
     -moz-box-sizing: border-box;
          box-sizing: border-box;
}

body {
  font-family: sans-serif;
}

/* ---- button ---- */

.button {
  display: inline-block;
  padding: 0.5em 1.0em;
  background: #EEE;
  border: none;
  border-radius: 7px;
  background-image: linear-gradient( to bottom, hsla(0, 0%, 0%, 0), hsla(0, 0%, 0%, 0.2) );
  color: #222;
  font-family: sans-serif;
  font-size: 16px;
  text-shadow: 0 1px white;
  cursor: pointer;
}

.button:hover {
  background-color: #8CF;
  text-shadow: 0 1px hsla(0, 0%, 100%, 0.5);
  color: #222;
}

.button:active,
.button.is-checked {
  background-color: #28F;
}

.button.is-checked {
  color: white;
  text-shadow: 0 -1px hsla(0, 0%, 0%, 0.8);
}

.button:active {
  box-shadow: inset 0 1px 10px hsla(0, 0%, 0%, 0.8);
}

/* ---- button-group ---- */

.button-group:after {
  content: '';
  display: block;
  clear: both;
}

.button-group .button {
  float: left;
  border-radius: 0;
  margin-left: 0;
  margin-right: 1px;
}

.button-group .button:first-child { border-radius: 0.5em 0 0 0.5em; }
.button-group .button:last-child { border-radius: 0 0.5em 0.5em 0; }

/* ---- isotope ---- */

.isotope {
  border: 1px solid #333;
}

/* clear fix */
.isotope:after {
  content: '';
  display: block;
  clear: both;
}

/* ---- .item ---- */

.item {
  position: relative;
  float: left;
  width: 100px;
  height: 100px;
  margin: 5px;
  padding: 10px;
  background: #888;
  color: #262524;
}

.item > * {
  margin: 0;
  padding: 0;
}

.item .name {
  position: absolute;
  left: 10px;
  top: 60px;
  text-transform: none;
  letter-spacing: 0;
  font-size: 12px;
  font-weight: normal;
}

.item .symbol {
  position: absolute;
  left: 10px;
  top: 0px;
  font-size: 42px;
  font-weight: bold;
  color: white;
}

.item .number {
  position: absolute;
  right: 8px;
  top: 5px;
}

.item .weight {
  position: absolute;
  left: 10px;
  top: 76px;
  font-size: 12px;
}

.item.alkali          { background: #F00; background: hsl(   0, 100%, 50%); }
.item.alkaline-earth  { background: #F80; background: hsl(  36, 100%, 50%); }
.item.lanthanoid      { background: #FF0; background: hsl(  72, 100%, 50%); }
.item.actinoid        { background: #0F0; background: hsl( 108, 100%, 50%); }
.item.transition      { background: #0F8; background: hsl( 144, 100%, 50%); }
.item.post-transition { background: #0FF; background: hsl( 180, 100%, 50%); }
.item.metalloid       { background: #08F; background: hsl( 216, 100%, 50%); }
.item.diatomic        { background: #00F; background: hsl( 252, 100%, 50%); }
.item.halogen         { background: #F0F; background: hsl( 288, 100%, 50%); }
.item.noble-gas       { background: #F08; background: hsl( 324, 100%, 50%); }
            
          
!
            
              $( document ).ready(function() {
    var $container = $('.isotope');
    // filter buttons
    $('#filters button').click(function(){
		var $this = $(this);
        // don't proceed if already selected
        if ( !$this.hasClass('is-checked') ) {
          $this.parents('#options').find('.is-checked').removeClass('is-checked');
          $this.addClass('is-checked');
        }
      var selector = $this.attr('data-filter');
      $container.isotope({  itemSelector: '.item', filter: selector });
      return false;
    });
    
});
            
          
!
999px
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