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HTML

CSS

CSS Base

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Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

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JavaScript

Babel is required to process package imports. If you need a different preprocessor remove all packages first.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

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Behavior

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Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

Format on Save

If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.

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HTML

              
                <svg xmlns="http://www.w3.org/2000/svg" version="1.1">
  <pattern id="pattern"
           x="0" y="0" width="24" height="24"
           patternUnits="userSpaceOnUse" >
    <rect fill="rgba(159, 188, 191, 0.15)" x="0" width="20" height="20" y="0"/>
    <rect fill="rgba(159, 188, 191, 0.15)" x="20" width="20" height="20" y="20"/>
  </pattern>
  <rect fill="url(#pattern)" x="0" y="0" width="100%" height="100%"/>
</svg>
<div id="accordion"></div>

              
            
!

CSS

              
                @import url(https://fonts.googleapis.com/css?family=Josefin+Slab:400,700);
@import url(https://fonts.googleapis.com/css?family=Maven+Pro);

$bodyBg: #3a3042;
$underLine: #ff784f;

body {
  background: $bodyBg;
  font-family: 'Maven Pro', sans-serif;
  margin: 0;
}

svg {
  position: absolute;
  width: 100%;
  height: 100%;
  z-index: -1;
  top: 0;
}

h1 {
  color: #fff;
  text-align: center;
  text-transform: uppercase;
  font-family: 'Josefin Slab', serif;
  font-size: 66px;
  margin-top: 10vh;
  letter-spacing: 10px;
}

.accordion-container {
  width: 60%;
  min-width: 500px;
  margin: 5vh auto;
  border-radius: 5px;
  background-color: #fff;
  box-shadow:-2px 1px 2px 2px #212121;
  
  div {
    border-bottom: 3px solid;
    border-color: $underLine;
    transition: border-color 0.5s ease-in;
  }
}

.answer, .summary {
  display: inline-block;
}

.answer {
  background: $bodyBg;
  color: #fff;
}

.summary {
  font-family: 'Josefin Slab', serif;
  text-transform: uppercase;
  cursor: pointer;
  line-height: 25px;
  padding: 15px;
  &:before {
    content: '>\0000a0';
  } 
}

.folding-pannel {
  display: block;
  transition: all 0.2s ease-in;
  line-height: 40px;
  border-top: 2px solid $bodyBg;
}

.active .summary {
  border-color: transparent;
  transition: border-color 0.2s ease-out;
}

.inactive .folding-pannel {
  transform-origin: 50% 0%;
  transform: perspective(250px) rotateX(-90deg);
  transition: all 0.4s ease-in-out;
  height: 0;

}
.active .folding-pannel {
  transform: perspective(350px) rotateX(0deg);
  transition: all 0.4s ease-in-out;
  height: 50px;
  line-height: 50px;
  text-indent: 40px;
}

              
            
!

JS

              
                class AccordionItem extends React.Component {
  constructor() {
    super();
    this.state = {
      active: false
    };
    this.toggle = this.toggle.bind(this);
  }
  toggle() {
    this.setState({
      active: !this.state.active,
      className: "active"
    });
  }
  render() {
    const activeClass = this.state.active ? "active" : "inactive";
    const question = this.props.details;
    return (
            <div className={activeClass} onClick={this.toggle}>
              <span className="summary">{question.summary}</span>
              <span className="folding-pannel answer">{question.answer}</span>
            </div>
    );
  }
}

class Accordion extends React.Component {
  constructor() {
    super();
    this.state = {
      questions: sampleQuestions,
    };
    this.renderQuestion = this.renderQuestion.bind(this);
  }
  renderQuestion(key) {
    return <AccordionItem key={key} index={key} details={this.state.questions[key]} />
  }
  render() {
    return(
      <div>
        <h1>What is...</h1>
        <div className="accordion-container">{Object.keys(this.state.questions).map(this.renderQuestion)} </div>
      </div>    
    )
  }
}
const sampleQuestions = {
  question1: {summary:'the capital of Canada?', answer:'Ottawa baby!!'},
  question2: {summary:'the life span of a bowhead whale?', answer:'Over 200 years!!'},
  question3: {summary:'the most visited city in the world?', answer:'London, groovy baby!!'},
  question4: {summary:'the warmest ocean?', answer:'Indian Ocean, it\'s a hottie!'},
  question5: {summary:'the one thing ron swanson hates more than lying?', answer:'Skim milk, which is water that\'s lying about being milk'}
};
ReactDOM.render(
  <Accordion />,
  document.getElementById('accordion')
);
              
            
!
999px

Console