site.css

/* Real Python's light and dark palettes (the CMS's brand.json). The page
 * follows the OS setting since it has no theme toggle. */
:root {
  color-scheme: light dark;
  --body-bg: #fff;
  --body-color: #4a4f64;
  --heading-color: #18354c;
  --link-color: #6f61ad;
  --note-bg: #ff7e73;
  --note-color: #18354c;
  --note-border: transparent;
}

@media (prefers-color-scheme: dark) {
  :root {
    --body-bg: #101820;
    --body-color: #cfd9e1;
    --heading-color: #e9eef3;
    --link-color: #a7c8e3;
    --note-bg: rgba(229, 62, 30, 0.18);
    --note-color: #e9eef3;
    --note-border: rgba(229, 62, 30, 0.6);
  }
}

body{
    background-color: var(--body-bg);
    font-family: source sans pro,-apple-system,BlinkMacSystemFont,segoe ui,Roboto,helvetica neue,Arial,sans-serif,apple color emoji,segoe ui emoji,segoe ui symbol;
    color: var(--body-color);
    font-size: 20px;
    margin-block-end: 0px;
    margin-block-start: 0px;
}

h1{
    margin: 2rem auto;
    font-size: 2em;
    color: var(--heading-color);
    text-align: center;
}

p {
  font-size: 1.2em;
  color: var(--heading-color);
  text-align: center;
  
  margin: 1rem auto;
 
}

/*
 * Real Python's CTA button (.btn-primary in the CMS's
 * frontend/css/buttons.scss on top of Bootstrap 5's .btn), with the
 * Sass color math resolved for $cta: #e53e1e.
 */
:root {
  --cta: #e53e1e;
  --cta-active: #e85235; /* $cta lightened 5% */
  --cta-border-bottom: #d13618; /* $cta darkened 5% */
  --cta-border-bottom-active: #dd391a; /* $cta darkened 2.5% */
  --cta-shadow: rgba(0, 0, 0, 0.3) 0 0 10px;
}

button,
#src-code,
#back-to-rp {
  -webkit-appearance: none;
  appearance: none;
  display: inline-block;
  position: relative;
  margin: 10px;
  padding: 0.375em 0.75em;
  font-family: inherit;
  font-size: 1.1em;
  font-weight: 400;
  line-height: 1.5;
  color: #fff;
  text-align: center;
  text-decoration: none;
  vertical-align: middle;
  cursor: pointer;
  user-select: none;
  background-color: var(--cta);
  border-style: solid;
  border-width: 0 1px 4px 1px;
  border-color: var(--cta);
  border-bottom-color: var(--cta-border-bottom);
  border-radius: 0.375rem;
  box-shadow: var(--cta-shadow);
  transition:
    color 0.15s ease-in-out,
    background-color 0.15s ease-in-out,
    border-color 0.15s ease-in-out,
    box-shadow 0.15s ease-in-out;
}

:is(button, #src-code, #back-to-rp):hover,
:is(button, #src-code, #back-to-rp):focus {
  color: #fff;
  background-color: var(--cta-active);
  border-color: var(--cta-active);
  border-bottom-color: var(--cta-border-bottom-active);
}

:is(button, #src-code, #back-to-rp):focus:not(:focus-visible) {
  outline: 0;
}

:is(button, #src-code, #back-to-rp):focus-visible {
  outline: 0;
  box-shadow: 0 0 0 0.2rem rgba(229, 62, 30, 0.5);
}

/* Pressed: the bottom border shrinks from 4px to 2px and the top grows to
 * 2px, so the button "sinks" into the page. */
:is(button, #src-code, #back-to-rp):active {
  outline: 0;
  border-top-width: 2px;
  border-bottom-width: 2px;
  background-color: var(--cta-active);
  border-color: var(--cta-active);
  border-bottom-color: var(--cta-border-bottom);
}

/* Bootstrap's .btn-lg, scaled up to be the page's main action */
#download {
  padding: 0.4em 1em;
  font-size: 1.6em;
  border-radius: 0.5rem;
  margin: 1.5rem auto 0.2rem auto;
}

.button-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

a {
  color: var(--link-color);
  text-decoration: none;
}

#logo {
  width: 100%;
  margin-left: auto;
  margin-right: auto;
}

.main-container {
  max-width: 40rem;
  min-width: 10rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-evenly;
  margin:auto;
  /* height: 80vh; */
}

.subtitle {
  font-size: 0.9em;
  margin-top: 10px;
  padding: 0 2rem 0 2rem;
  text-align: center;
}

.note {
  margin: 2rem 3rem;
  text-align: center;
  background-color: var(--note-bg);
  color: var(--note-color);
  border: 1px solid var(--note-border);
  padding: 1em;
  border-radius: 5px;
}

.download-container {
  display:flex;
  flex-direction: column;
  justify-content: center;
}