index.css

@import url('https://fonts.googleapis.com/css2?family=Goblin+One&display=swap');

:root {
  --wine-red: #c7375f;
  --bright-red: #d42d2f;
  --dark-green: #344d2f;
  --light-green: #77a047;
  --gold: #fac57d;
  --snow: #f0f4f7;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: 'Goblin One', serif;
}

body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100vh;
  padding: 10px;
  text-align: center;
  color: var(--dark-green);
  background-color: var(--snow);
}

.container {
  display: flex;
  flex-direction: column;
  background: var(--wine-red);
  color: var(--snow);
  padding: 1em 2em;
  border-radius: 5px;
  box-shadow: rgba(0, 0, 0, 0.1) 0px 4px 6px -1px, rgba(0, 0, 0, 0.06) 0px 2px 4px -1px;
}

.countdown-display {
  font-size: 65px;
  margin: 0;
}

.countdown-container {
  display: flex;
  gap: 15px;
}

.hours-minutes-seconds-container {
  display: flex;
  gap: 5px;
}

.hours-minutes-seconds-container div {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 170px;
}

/* dialog styles */

#dialog-container {
  width: 400px;
  margin-bottom: 20px;
  background-color: var(--gold);
  color: var(--snow);
  padding: 20px;
  box-sizing: border-box;
  transition: width 0.5s;
}

#countdown-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-align: left;
}

#countdown-title {
  text-transform: capitalize;
}

.btn {
  padding: 16px 32px;
  background-color: var(--light-green);
  border: none;
  color: var(--snow);
  border-radius: 4px;
  cursor: pointer;
  margin-top: 15px;
  box-shadow: rgba(0, 0, 0, 0.1) 0px 4px 6px -1px, rgba(0, 0, 0, 0.06) 0px 2px 4px -1px;

  transition: scale 0.5s;
}

.btn:active {
  scale: 98%;
}

#countdown-form input {
  padding: 16px;
  width: 100%;
  border: none;
  border-radius: 4px;
}

@media only screen and (max-width: 720px) {
  .countdown-container {
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }
}