style.css

body {
  --text: hsl(0 0% 15%);
  padding: 2.5rem;
  background-color: hsl(0 0% 96%);
  font-family: sans-serif;
  color: var(--text);
}
body.dark-theme {
  --text: hsl(0 0% 90%);
  background-color: hsl(223 39% 7%);
}

main {
  max-width: 80rem;
  text-align: center;
}

section {
  display: flex;
  flex-direction: column;
  align-items: center;
}

a {
  color: var(--text);
}

select, input, button, .text-gen-output {
  padding: 0.5rem 1rem;
}

select, img, input {
  margin: 0.5rem auto 1rem;
}

form {
  width: 25rem;
  margin: 0 auto;
}

input {
  width: 70%;
}

button {
  cursor: pointer;
}

.text-gen-output {
  min-height: 1.2rem;
  margin: 1rem;
  border: 0.5px solid grey;
}

#dataset button {
  width: 6rem;
  margin: 0.5rem;
}

#dataset button.hidden {
  visibility: hidden;
}

table {
  max-width: 40rem;
  text-align: left;
  border-collapse: collapse;
}

thead {
  font-weight: bold;
}

td {
  padding: 0.5rem;
}

td:not(thead td) {
  border: 0.5px solid grey;
}