.demo {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  width: 100%;
  padding: 1.5rem 1.25rem 2rem;
}
@media screen and (min-width: 40em) {
  .demo {
    padding: 2rem 1.5rem 2.5rem;
  }
}
.demo__preview {
  counter-increment: block-counter;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.demo__heading,
.demo__preview-heading {
  font-family: monospace;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0;
}
.demo__heading {
  font-size: 1.25rem;
}
.demo__preview-heading {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  align-self: flex-start;
  font-size: 1rem;
}
.demo__preview-heading:before {
  content: counter(block-counter);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  color: var(--color-data-red-90);
  border-width: 2px;
  border-style: solid;
  border-color: red;
  border-radius: 0.25rem;
}
.demo__preview[data-ready="true"] .demo__preview-heading:before {
  color: #fff;
  background-color: green;
  border: 0;
}
.demo__preview-link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.25rem;
  padding: 0.25rem 0.5rem;
  font: inherit;
  color: inherit;
  background-color: #eee;
  border-radius: 0.25rem;
}
.demo__preview-link:hover {
  background-color: #ddd;
}
.demo__preview-link:focus {
  outline-width: 2px;
  outline-style: solid;
  outline-color: #00f;
  outline-offset: -1px;
}
.demo__preview-link-icon {
  display: none;
  translate: 0 -0.0625rem;
}
.demo__preview-link:hover .demo__preview-link-icon {
  display: inline;
}
.demo__preview-control {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}
.demo__preview-select {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-width: 10rem;
}
.demo__preview-select-label {
  font-family: monospace;
  font-size: 0.875rem;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0;
  color: #444;
}
.demo__preview-select-input {
  display: block;
  min-height: 2rem;
  font-family: monospace;
  font-size: 0.875rem;
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: 0;
  color: inherit;
  border-width: 1px;
  border-style: solid;
  border-color: #bbb;
  border-radius: 0.25rem;
}
.demo__preview-select-input:focus {
  outline-width: 2px;
  outline-style: solid;
  outline-color: #00f;
  outline-offset: -1px;
}
.demo__preview-frame {
  display: block;
  width: 100%;
  outline-width: 2px;
  outline-style: solid;
  outline-color: #ddd;
}