<link href="https://fonts.googleapis.com/css?family=Open+Sans" rel="stylesheet">
<div class="pen">
  <div class="container">
    <div class="tooltip-container">
      <div class="tooltip">
        <ul class="sheet-1">
          <li>Option 1</li>
          <li>Option 2</li>
          <li>Option 3</li>
        </ul>
        <ul class="sheet-2">
          <li>Cancel</li>
        </ul>
      </div>
    </div>
  </div>
</div>

body {
  --pink: #FF1C68;
  --green: #14D790;
  --blue: #198FE3;
  --white: #fff;
  background: var(--white);
  font-family: 'Open Sans', sans-serif;
  height: 100vh;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
}

.pen {
  flex: 1 1 100%;
}

.created-by {
  flex: 0 0 50px;
  background: #fff;
  color: #222;
  text-decoration: none;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  padding-right: 30px;
}

.logo {
  margin-left: 10px;
}

.pen {
  display: flex;
  justify-content: center;
  align-items: flex-start;
}

.container {
  position: absolute;
  
  button {
    cursor: pointer;
    padding: 20px 25px;
    border: none;
    font-size: 18px;
    font-weight: bold;
    color: white;
    background: linear-gradient(#ED00BB, #A100F6);
    border-radius: 5px;
    text-shadow: 0 -1px 0 rgba(0,0,0,0.3);
  }
}

$tooltipColor: #198FE3;
.tooltip-container {
  position: absolute;
  padding-top: 50px;
  bottom: 0;
  left: 50%;
  transform: translateY(100%) translateX(-50%);
  
  &:after {
    content: '';
    display: block;
    background: $tooltipColor;
    width: 30px;
    height: 30px;
    position: absolute;
    top: 40px;
    left: 50%;
    transform: translateX(-50%) rotateZ(45deg);
  }
}

.tooltip {
  background: $tooltipColor;
  position: relative;
}

ul {
  margin: 0;
  padding: 30px;
  width: 200px;
}

.sheet-2 {
  display: none;
}

$textColor: #fff;
li {
  list-style: none;
  color: $textColor;
  cursor: pointer;
  margin-bottom: 20px;
  border-bottom: 2px solid $textColor;
  padding-bottom: 10px;
  opacity: 0;
  
  &:last-child {
    margin-bottom: 0;
  }
}

const { spring, tween, easing } = popmotion;

const tooltip = document.querySelector('.tooltip');
const sheet1 = document.querySelector('.sheet-1');
const sheet2 = document.querySelector('.sheet-2');
const sheet1Items = Array.from(document.querySelectorAll('.sheet-1 li'));
const sheet2Items = Array.from(document.querySelectorAll('.sheet-2 li'));

const pages = [sheet1, sheet2];
let activeSheet = sheet1;

const tooltipProps = {
  flip: {
    transition: ({ from, to }) => tween({ from, to, ease: easing.backOut })
  },
  offLeft: { staggerChildren: 50 }
};

const offTransition = {
  opacity: 0,
  transition: ({ from, to }) => tween({ from, to, duration: 200 })
};
const itemProps = {
  offLeft: { ...offTransition, x: -20 },
  on: { x: 0, opacity: 1 },
  offRight: { ...offTransition, x: 20 }
};

const tooltipPoser = pose(tooltip, tooltipProps);
sheet1Items.forEach(item => tooltipPoser.addChild(item, {
  initialPose: 'on',
  ...itemProps
}));

const show = (sheet, items) => () => {
  const currentSheetIndex = pages.indexOf(activeSheet);
  const nextSheetIndex = pages.indexOf(sheet);
  const isRight = currentSheetIndex - nextSheetIndex < 1;
  
  tooltipPoser.set(isRight ? 'offLeft' : 'offRight')
    .then(() => {
      // Measure and cache the physical dimensions of the element
      tooltipPoser.measure();
    
      // Switch sheets in DOM
      activeSheet.style.display = 'none';
      sheet.style.display = 'block';
    
      // Remove current items as children from tooltipPoser and add new ones
      tooltipPoser.clearChildren();
      items.forEach(item => tooltipPoser.addChild(item, {
        initialPose: isRight ? 'offRight' : 'offLeft',
        ...itemProps
      }));
      activeSheet = sheet;
    
      tooltipPoser.flip()
        .then(() => tooltipPoser.set('on'));
    });
};

sheet1.addEventListener('click', show(sheet2, sheet2Items));
sheet2.addEventListener('click', show(sheet1, sheet1Items));