app.css

* {
  box-sizing: border-box;

  --background-color: white;
  --text-color: #333;
  --shadow-color: #ccc;
  --table-alternate-color: #f9f9f9;
  --background-color-attribution: rgba(255, 255, 255, 0.8);
}

@media (prefers-color-scheme: dark) {
  * {
    --background-color: #333;
    --shadow-color: #222;
    --text-color: #cccccc;
    --table-alternate-color: #444;
    --background-color-attribution: rgba(51, 51, 51, 0.8);
  }
}

body {
  margin: 0;
  font-family: "Helvetica Neue",Helvetica,Arial,sans-serif;
  font-size: 14px;
  line-height: 1.42;
  color: var(--text-color);
  background-color: var(--background-color);
  overflow-y: scroll;
}

a {
  color: #337ab7;
  text-decoration: none;
}

a:focus, a:hover {
  color: #23527c;
  text-decoration: underline;
}

h1, h2, h3, h4, h5, h6 {
  font-family: inherit;
  font-weight: 500;
  line-height: 1.1;
}

#wizard {
  padding-bottom: 4em;
}

@media (min-width: 768px) {
  #wizard .pane {
    width: 750px;
  }
}

@media (min-width: 992px) {
  #wizard .pane {
    width: 970px;
  }
}

@media (min-width: 1200px) {
  #wizard .pane {
    width: 1170px;
  }
}

.initiallyhidden {
  display: none;
}

.table {
  width: 100%;
  max-width: 100%;
  margin-bottom: 20px;
  background-color: transparent;
  border-spacing: 0;
  border-collapse: collapse;
}

.table > thead {
  position: sticky;
  top: 0;
  z-index: 1;
  background: var(--background-color);
}

.table-striped > tbody > tr:nth-of-type(2n+1) {
  background-color: var(--table-alternate-color);
}

.table td, th {
  padding: 8px;
  text-align: left;
}

.table td {
  border-top: 1px solid #ddd;
}

.table th {
  border-top: 0;
  border-bottom: 2px solid #ddd;
}

.floatingBottomRight {
  position: fixed;
  right: 0;
  bottom: 0;
  margin: 0;
  padding: 0.5em;
  background: var(--background-color-attribution);
}

#branchName {
  text-transform: capitalize;
  font-weight: bold;
}

#currentVersions {
  float:right;
  padding: .5em;
  color: #999;
}

#firmwareTable {
  padding: 4em 1em;
}

#firmwareTable h1 {
  color: #dc0067;
}

.firmwareTableLink, .notRecommendedLink, .InfoLink {
  clear: right;
  float:right;
  color: #337ab7;
  cursor: pointer;
}

.notRecommendedLink {
  display: none;
}

.firmwareTableLink:hover, .notRecommendedLink:hover {
  text-decoration: underline;
}

.notRecommendedLabel {
  color: #337ab7;
}

#wizard #model-pane .notRecommendedCheckbox {
  width:auto;
  display: inline;
}

#wizard .pane-wrapper {
  box-shadow: 0 0.15em 0.5em var(--shadow-color);
  margin: 1em 0 3em 0;
}

#wizard .pane {
  padding: 2em;
  margin-right: auto;
  margin-left: auto;
}

#wizard #model-pane {
  border-left: 3px solid #dc0067;
}

#wizard #model-pane h1 {
  color: #dc0067;
}

#wizard #model-pane input {
  display: block;
  width: 100%;
}

#wizard #type-pane {
  border-left: 3px solid #ffb400;
}

#wizard #type-pane h1 {
  color: #ffb400;
}

#wizard #type-pane .radiogroup label {
  background-color: #ffb400;
  color: #333333;
}

#wizard #type-pane .radiogroup input[type="radio"]:checked + label {
  box-shadow: 0 0 0.5em var(--shadow-color) inset;
}

#wizard #branch-pane {
  border-left: 3px solid #009ee0;
}

#wizard #branch-pane h1 {
  color: #009ee0;
}

#wizard #branch-pane sup {
  color: #009ee0;
}

#wizard #branch-pane .btn,
#wizard #type-pane .btn {
  background-color: #009ee0;
}

#wizard #branch-pane.show-experimental-warning button.dl-experimental {
  box-shadow: 0 0 0.5em var(--shadow-color) inset;
}

#wizard #type-pane.show-deviceinfo-warning button.deviceinfo {
  box-shadow: 0 0 0.5em var(--shadow-color) inset;
}

#wizard #branch-pane .warning-experimental,
#wizard #model-pane .warning-notrecommended,
#wizard #type-pane .warning-deviceinfo {
  display: none;
  margin: 1em 0;
  padding: 1em;
  box-shadow: 0.125em 0.125em 0.5em var(--shadow-color);
  border: .5em solid #009ee0;
}

#wizard #branch-pane.show-experimental-warning .warning-experimental,
#wizard #model-pane.show-notrecommended-warning .warning-notrecommended,
#wizard #type-pane.show-deviceinfo-warning .warning-deviceinfo {
  display: block;
}

#wizard p {
  margin: 1em auto;
}

#wizard select, #wizard input {
  font: inherit;
  color: inherit;
  margin-bottom: .5em;
  background: var(--background-color);
  border: none;
  border: 1px solid #ddd;
  box-shadow: 1px 2px 2px 0 var(--shadow-color);
  padding: 0.75em 0.75em;
  margin-right: 0.5em;
  margin-bottom: 1em;
  transition: box-shadow 200ms ease-in-out;
}

#wizard select:focus, #wizard input:focus {
  box-shadow: 1px 2px 2px 0 var(--shadow-color), 2px 2px 6px var(--shadow-color);
}

#wizard option {
  font: inherit;
  color: inherit;
}

#wizard select.invalid {
  border: 1px solid #dc0067;
  box-shadow: 0.125em 0.125em 0.5em rgba(219, 0, 102, 0.125);
}

#wizard .radiogroup input {
  display: none;
}

#wizard .radiogroup label, #wizard .btn {
  display: inline-block;
  list-style-type: none;
  font: inherit;
  color: var(--text-color);
  margin: .5em;
  padding: .5em 1em;
  border: none;
  box-shadow: 0.125em 0.125em 0.5em var(--shadow-color);
  font-weight: normal;
  cursor: pointer;
}

#wizard .btn:hover {
  color: var(--text-color);
}

#wizard .imagePreview {
  display: grid;
  grid-template-columns: 25% 25% 25% 25%;
  -ms-grid-columns: 25% 25% 25% 25%;
}

@media (max-width: 960px) {
  #wizard .imagePreview {
    display: grid;
    grid-template-columns: 33% 33% 33%;
    -ms-grid-columns: 33% 33% 33%;
  }
}

@media (max-width: 700px) {
  #wizard .imagePreview {
    display: grid;
    grid-template-columns: 50% 50%;
    -ms-grid-columns: 50% 50%;
  }
}

@media (max-width: 500px) {
  #wizard .imagePreview {
    display: grid;
    grid-template-columns: 100%;
    -ms-grid-columns: 100%;
  }
}

#wizard .imagePreview .preview {
  min-height: 11em;
  margin: 0.5em;
  padding: 0.5em;
  border: 1px solid var(--background-color);
  text-align: center;
}

#wizard .imagePreview .preview:hover {
  border: 1px solid var(--shadow-color);
  cursor: pointer;
}

#wizard .imagePreview .preview.selected {
  border: 1px solid var(--shadow-color);
  cursor: default;
  box-shadow: 0 0 0.5em var(--shadow-color) inset;
}

#wizard .imagePreview .preview img {
  height: auto;
  width: auto;
  max-width: 100%;
  max-height: 8em;
  margin-bottom: 0.5em;
}

#wizard .imagePreview .preview span {
  display: block;
  margin: auto 0.5em;
}