main.css

body {
  --active-brightness: 0.85;
  --border-radius: 5px;
  --box-shadow: 2px 2px 10px;
  --color-accent: #118bee15;
  --color-bg: #333;
  --color-bg-secondary: #e9e9e9;
  --color-link: #369;
  --color-secondary: #4F5B93;
  --color-secondary-accent: #7A86B8;
  --color-shadow: rgba(51,51,51,0.3);
  --color-table: #7A86B8;
  --color-text: #000;
  --color-text-secondary: #999;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  --hover-brightness: 1.2;
  --justify-important: center;
  --justify-normal: left;
  --line-height: 1.5;
  --width-card: 285px;
  --width-card-medium: 460px;
  --width-card-wide: 800px;
  --width-content: 1080px;
}

.header {
  display: flex;
  gap: 2rem;
  justify-content: space-between;
  align-items: flex-start;
  margin: 1rem 0;
}

main {
  margin-block: 3rem;
  padding-block: 1px 1rem;
  background-color: var(--color-bg-secondary);
}

h1 {
  margin: 0;
}

form {
  display: block;
  position: sticky;
  top: 0;
  border: none;
  width: calc(100% + 2rem);
  max-width: none;
  box-shadow: 0 3px 0 transparent;
  border-radius: 0;
  margin-inline-start: -1rem;
  padding: 0.5rem 0;
  background-color: var(--color-bg-secondary);
  transition: 0.25s box-shadow ease-in-out;
}

input:where([type="date"], [type="time"]) {
  min-width: 125px;
}

form.disabled {
  pointer-events: none;
  position: static;
  opacity: 0.3
}

form.is-stuck:not(.disabled) {
  box-shadow: 0 3px 3px var(--color-shadow);
}

.form-contents {
  padding: 0 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0 0.5rem;
}

.form-contents > :is(h1, h2, h3, h4, h5, h6) {
  flex-shrink: 0;
  flex-basis: 100%;
}

.form-contents .field {
  flex-shrink: 0;
}

.form-contents .field-source {
  flex-shrink: 0;
  flex-basis: 100%;
}

.form-contents .field-output {
  flex-basis: 100%;
}

summary > :is(h1, h2, h3, h4, h5, h6) {
  display: inline-block;
  margin: 0 0 1rem 0;
}

table {
  width: 100%;
  max-width: 100%;
  display: table;
}

table thead {
  color: var(--color-bg-secondary);
}

:is(table td, table th) {
  text-align: left;
  word-wrap: break-word;
  white-space: normal;
}

:is(table td, table th):first-child {
  max-width: 250px;
}

code {
  background-color: transparent;
  padding: 0;
  font-size: 1.1em;
}