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CSS

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JavaScript

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HTML 

              
                <div class="bg-gray-100 h-screen w-screen flex justify-center">
  <div class="mr-8">

    <h1 class="font-medium max-w-xl mx-auto pt-10 pb-4">Stellar Accordion</h1>
    <div class="bg-white max-w-xl mx-auto border border-gray-200" x-data="{selected:1}">
      <ul class="shadow-box">

        <li class="relative border-b border-gray-200">

          <button type="button" class="w-full px-8 py-6 text-left" @click="selected !== 1 ? selected = 1 : selected = null">
            <div class="flex items-center justify-between">
              <span>
Hundreds of thousands of brilliant syntheses encyclopaedia galactica explorations colonies the sky calls to us. 
</span>
              <span class="ico-plus"></span>
            </div>
          </button>

          <div class="relative overflow-hidden transition-all max-h-0 duration-700" style="" x-ref="container1" x-bind:style="selected == 1 ? 'max-height: ' + $refs.container1.scrollHeight + 'px' : ''">
            <div class="p-6">
              <p>Bits of moving fluff take root and flourish rich in heavy atoms permanence of the stars shores of the cosmic ocean are creatures of the cosmos.</p>
              <p>Brain is the seed of intelligence with pretty stories for which there's little good evidence a very small stage in a vast cosmic arena with pretty stories for which there's little good evidence vastness is bearable only through love Sea of Tranquility and billions upon billions upon billions upon billions upon billions upon billions upon billions.</p>
              <p>White dwarf worldlets courage of our questions Apollonius of Perga a mote of dust suspended in a sunbeam how far away.</p>
            </div>
          </div>

        </li>

        <li class="relative border-b border-gray-200">

          <button type="button" class="w-full px-8 py-6 text-left" @click="selected !== 2 ? selected = 2 : selected = null">
            <div class="flex items-center justify-between">
              <span>
                A mote of dust suspended in a sunbeam made in the interiors of collapsing stars made in the interiors of collapsing stars shores </span>
              <span class="ico-plus"></span>
            </div>
          </button>

          <div class="relative overflow-hidden transition-all max-h-0 duration-700" style="" x-ref="container2" x-bind:style="selected == 2 ? 'max-height: ' + $refs.container2.scrollHeight + 'px' : ''">
            <div class="p-6">
              <p>The cosmic ocean globular star cluster two ghostly white figures in coveralls and helmets are softly dancing. Are creatures of the cosmos vastness is bearable only through love astonishment are creatures of the cosmos citizens of distant epochs globular star cluster.</p>
              <p>Paroxysm of global death Drake Equation Tunguska event rings of Uranus the ash of stellar alchemy realm of the galaxies. </p>
            </div>
          </div>

        </li>

        <li class="relative border-b border-gray-200">

          <button type="button" class="w-full px-8 py-6 text-left" @click="selected !== 3 ? selected = 3 : selected = null">
            <div class="flex items-center justify-between">
              <span>
                Dispassionate extraterrestrial observer hundreds of thousands hearts of the stars network of wormholes something incredible is waiting to be known gathered by gravity?  </span>
              <span class="ico-plus"></span>
            </div>
          </button>

          <div class="relative overflow-hidden transition-all max-h-0 duration-700" style="" x-ref="container3" x-bind:style="selected == 3 ? 'max-height: ' + $refs.container3.scrollHeight + 'px' : ''">
            <div class="p-6">
              <p>Citizens of distant epochs courage of our questions made in the interiors of collapsing stars from which we spring shores of the cosmic ocean the carbon in our apple pies.</p>
              <p>Venture cosmic fugue star stuff harvesting star light corpus callosum the only home we've ever known something incredible is waiting to be known?</p>
              <p>Emerged into consciousness descended from astronomers a still more glorious dawn awaits radio telescope rich in mystery cosmic ocean? </p>
              <ul>
                <li>Extraordinary claims require extraordinary evidence gathered by gravity cosmic ocean network of wormholes Sea of Tranquility made in the interiors of collapsing stars.</li>
                <li>Two ghostly white figures in coveralls and helmets are softly dancing two ghostly white figures in coveralls and helmets are softly dancing a mote of dust</li>
              </ul>
              <p>Suspended in a sunbeam a still more glorious dawn awaits the ash of stellar alchemy a very small stage in a vast cosmic arena?</p>
            </div>
          </div>

        </li>

      </ul>
    </div>
  </div>
</div>
!

CSS 

              
                .max-h-0 {
  max-height: 0;
}
!

JS
!
999px

Console