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HTML

              
                div#contain
  div.inputContainer
    label#inputOneLabel(for="inputOne") Input
    input#inputOne
  
  div.inputContainer
    label#inputTwoLabel(for="inputTwo") Input
    input#inputTwo
  
  div.inputContainer
    label#inputThreeLabel(for="inputThree") Input
    input#inputThree
  
  
//-   div.inputContainer
//-     label#inputFourLabel(for="inputFour") Input
//-     input#inputFour
              
            
!

CSS

              
                @import url('https://fonts.googleapis.com/css?family=Quicksand&display=swap');

html, body {
  font-family: 'Quicksand', sans-serif;
  height: 100%;
}

#contain {
  height: 100%;
  display: flex;
  flex-flow: column;
  align-items: center;
  justify-content: center;
}

.inputContainer {
  position: relative;
  margin: 24px;
  
  label {
    font-size: 0.9em;
    display: block;
    margin-bottom: 6px;
    line-height: 0px;
  }
  
  input {
    margin-top: 6px;
    height: 30px;
    width: 300px;
  }
}


              
            
!

JS

              
                const inputOne = document.querySelector("#inputOne");
const inputOneLabel = document.querySelector("#inputOneLabel");
const splitLabelOne = Splitting({ target: inputOneLabel, by: "chars" })[0]
  .chars;

const inputTwo = document.querySelector("#inputTwo");
const inputTwoLabel = document.querySelector("#inputTwoLabel");
const splitLabelTwo = Splitting({ target: inputTwoLabel, by: "chars" })[0]
  .chars;

const inputThree = document.querySelector("#inputThree");
const inputThreeLabel = document.querySelector("#inputThreeLabel");
const splitLabelThree = Splitting({ target: inputThreeLabel, by: "chars" })[0]
  .chars;

let sineMeUp = false;
const sineCharacters = [];

inputOne.addEventListener("focus", animateInputOne);
inputOne.addEventListener("blur", deanimateInputOne);

inputTwo.addEventListener("focus", animateInputTwo);
inputTwo.addEventListener("blur", deanimateInputTwo);

inputThree.addEventListener("focus", () => {
  sineMeUp = true;
  animateInputThree([...sineCharacters]);
});
inputThree.addEventListener("blur", () => {
  sineMeUp = false;
  deanimateInputThree();
});

function animateInputOne() {
  const charDistance = inputOne.clientWidth / 4;
  let count = 0;
  let charStart = 0;

  //Using fromTo because absolute positioning 
  //makes all the chars start at 0 on first execution
  for (let char of splitLabelOne) {
    TweenMax.fromTo(
      char,
      0.5,
      { x: charStart },
      {
        x: charDistance * count,
        ease: Elastic.easeInOut,
        position: "absolute"
      }
    );

    charStart += determineCharDistance(count);
    count++;
  }
}

function deanimateInputOne() {
  let charDistance = 0;
  let count = 0;

  for (let char of splitLabelOne) {
    TweenMax.to(char, 0.5, {
      x: charDistance,
      position: "absolute",
      ease: Elastic.easeInOut
    });

    charDistance += determineCharDistance(count);

    count++;
  }
}

function animateInputTwo() {
  const inputWidth = inputTwo.clientWidth;
  const inputHeight = inputTwo.clientHeight;
  let distanceFromInput = inputWidth - 28;
  let count = 0;
  let delay = 0.5;
  let charStart = 0;

  for (const char of splitLabelTwo) {
    char.style.zIndex = "-1";
    TweenMax.fromTo(
      char,
      0.25,
      { x: charStart },
      {
        y: inputHeight + 24,
        x: distanceFromInput,
        rotation: 360,
        delay,
        position: "absolute",
        ease: Power3.easeInOut
      }
    );

    distanceFromInput += determineCharDistance(count);
    charStart += determineCharDistance(count);

    delay -= 0.1;
    count++;
  }
}

function deanimateInputTwo() {
  let charDistance = 0;
  let count = 0;
  let delay = 0.0;

  for (let char of splitLabelTwo) {
    char.style.zIndex = "-1";
    TweenMax.to(char, 0.25, {
      y: 0,
      x: charDistance,
      rotation: -360,
      position: "absolute",
      delay,
      ease: Power3.easeInOut
    });

    charDistance += determineCharDistance(count);

    count++;
    delay += 0.1;
  }
}

function animateInputThree(chars) {
  if (sineMeUp) {
    let count = 0;

    for (const char of splitLabelThree) {
      TweenMax.to(char, 0.01, {
        position: "absolute",
        y: chars[count].y,
        x: chars[count].x,
        ease: Power2.easeInOut
      });

      chars[count].angle += 0.12;
      chars[count].y = Math.sin(chars[count].angle) * -5 - 5;
      count++;
    }

    requestAnimationFrame(() => {
      animateInputThree(chars);
    });
  }
}

function deanimateInputThree() {
  for (const char of splitLabelThree) {
    TweenMax.to(char, 0.25, {
      y: 0,
      ease: Power2.easeInOut
    });
  }
}

function determineCharDistance(count) {
  return count === 0 ? 3 : 8;
}

//To configure the sine wave input properly
window.onload = () => {
  const offset = Math.PI / 5;
  let count = 0;
  let charDistance = 0;

  for (let i = 0; i < 5; i++) {
    const angle = offset * count;

    sineCharacters.push({
      angle,
      y: Math.sin(angle) * -5 - 5,
      x: charDistance
    });

    charDistance += determineCharDistance(count);
    count++;
  }
};

              
            
!
999px

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