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                <link href="" rel="stylesheet">
<div class="my-form">
  <label for="day-input">Number of days</label>
  <input id="day-input" type="number" min="1">
  <button id="calculate-button">Calculate!</button>
  <p id="hours"></p>
  <p id="minutes"></p>
  <p id="seconds"></p>


                body {
  background-color: #111;
  color: #EEE;
  font-family: 'Roboto Slab', serif;

.my-form {
  padding: 20px;


                // Create constants here
// =====================================

const hoursPerDay = 24;
const minutesPerHour = 60;
const secondsPerMinute = 60;

// =====================================

const dayInput = document.querySelector('#day-input');
const calculateButton = document.querySelector('#calculate-button');
const hours = document.querySelector('#hours');
const minutes = document.querySelector('#minutes');
const seconds = document.querySelector('#seconds');

calculateButton.addEventListener('click', () => {
  let days = dayInput.value;
  let calcHours = days * hoursPerDay;
  let calcMinutes = calcHours * minutesPerHour;
  let calcSeconds = calcMinutes * secondsPerMinute;
  hours.innerText = `${calcHours} hours`;
  minutes.innerText = `${calcMinutes} minutes`;
  seconds.innerText = `${calcSeconds} seconds`;