hello-wordl/src/App.css

* {
  box-sizing: border-box;
}

body {
  text-align: center;
  background-color: #eeeeee;
}

.Row {
  display: flex;
  align-items: center;
  justify-content: center;
}

.Row-letter {
  margin: 2px;
  border: 2px solid rgba(128, 128, 128, 0.8);
  flex: 1;
  max-width: 40px;
  height: 40px;
  font-size: 28px;
  display: flex;
  justify-content: center;
  align-items: center;
  text-transform: uppercase;
  font-weight: bold;
}

.Row-annotation {
  margin-inline-start: 16px;
  width: 5em;
  text-align: start;
}

.App-container {
  position: relative;
  max-width: 500px;
  display: flex;
  flex-direction: column;
  margin: 0 auto;
  justify-content: center;
}

.App-container h1 {
  margin-top: 0;
}

.Game,
h1 {
  user-select: none;
}

.Game {
  display: flex;
  flex-direction: column;
}

table.Game-rows {
  margin: auto;
  display: flex;
  flex-direction: column;
}

table.Game-rows:focus {
  outline: none;
}

table.Game-rows > tbody {
  display: flex;
  flex-direction: column;
}

.Game-keyboard {
  display: flex;
  flex-direction: column;
}

.Game-keyboard-row {
  display: flex;
  flex-direction: row;
  justify-content: stretch;
}

.Game-keyboard-button {
  margin: 2px;
  background-color: #cdcdcd;
  padding: 2px;
  text-transform: capitalize;
  border-radius: 4px;
  min-height: 40px;
  display: flex;
  flex: 1;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: inherit;
  text-decoration: inherit;
  border: 2px solid transparent;
  cursor: pointer;
}

.Game-keyboard-button-wide {
  flex: 2;
}

.Game-keyboard-button:focus {
  outline: none;
}

.letter-correct {
  border: 2px solid rgba(0, 0, 0, 0.3);
  background-color: rgb(87, 172, 120);
  color: white !important;
}

.letter-elsewhere {
  border: 2px dotted rgba(0, 0, 0, 0.3);
  background-color: #e9c601;
  color: white !important;
}

.letter-absent {
  border: 2px solid transparent;
  background-color: rgb(162, 162, 162);
  color: white !important;
}

body.dark {
  background-color: #404040;
  color: #e0e0e0;
}

body.dark .Game-keyboard-button {
  color: #404040;
}

a,
a:visited {
  color: #8080ff;
}

a:active {
  color: #cc77ff;
}

.Game-options {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.Game-options > * + * {
  margin-inline-start: 0.5rem;
}

.Game-options button {
  min-width: 4rem;
}

.App-footer {
  margin: -1rem 0 2rem 0;
  font-size: 80%;
  line-height: 1.5;
}

.App-about {
  margin-top: -1rem;
  line-height: 1.4;
}

.App-about b {
  background-color: #888;
  color: white;
  padding: 1px 3px;
  border-radius: 2px;
}

.App-about b.green-bg {
  background-color: rgb(87, 172, 120);
}

.App-about b.yellow-bg {
  background-color: #e9c601;
}

.Game-seed-info {
  opacity: 0.5;
  margin-top: 1em;
  font-variant-numeric: tabular-nums;
}

.Game-sr-feedback,
.sr-only {
  position: absolute;
  left: -10000px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.Settings {
  text-align: left;
  font-size: 18px;
}

.Settings-setting {
  margin: 8px;
  display: flex;
  align-items: top;
}

.Settings-setting input {
  width: 18px;
  height: 18px;
}

.Settings-setting input[type=range] {
  width: 50px;
  height: 18px;
}

.Settings-setting label {
  margin-inline-start: 8px;
}

.top-right {
  position: absolute;
  top: 5px;
  right: 5px;
}

.emoji-link {
  font-size: 150%;
  text-decoration: none;
}

.top-right a + a {
  margin-inline-start: 8px;
}