styles.css

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --light-grey: #f5f6f7;
  --dark-blue: #1b1b32;
  --orange: #f1be32;
}

body {
  background-color: var(--dark-blue);
  font-family: 'Times New Roman', Times, serif;
  font-size: 18px;
  color: var(--light-grey);
  padding: 0 15px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

h1 {
  text-align: center;
  font-size: 2.3rem;
  margin: 20px 0;
}

.input-container {
  margin: 10px 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  justify-content: center;
  align-items: center;
}

.convert-btn {
  background-color: var(--orange);
  cursor: pointer;
  border: none;
  padding: 4px;
}

.number-input {
  height: 25px;
}

#result {
  margin: 10px 0;
  min-width: 200px;
  width: fit-content;
  min-height: 80px;
  word-break: break-word;
  padding: 15px;
  border: 5px solid var(--orange);
  font-size: 2rem;
  text-align: center;
}

#animation-container {
  margin: auto;
  max-width: 300px;
}

.animation-frame {
  margin: 250px auto 0;
  padding: 15px 10px;
  border: 5px solid var(--orange);
  font-size: 1.2rem;
  text-align: center;
}

@media screen and (min-width: 500px) {
  .input-container {
    flex-direction: row;
  }

  #result {
    max-width: 460px;
  }
}