:root {
  background-color: #f9f9f9
}

.container {
  display: inline-flex;     /* -- shrink-wrap to content width ----- -- */
  flex-direction: column;
  justify-content: center;  /* -- center vertically                  -- */
  align-items: center;      /* -- center child elements horizontally -- */
  min-height: 100vh;
  max-width: 100%;
  /* width: 100%; */
  margin: 0 auto;           /* -- horizontal centering ------------- -- */
}

button {
  --pico-font-family: inherit;
  --pico-font-weight: 700;
  padding-inline: 2.5rem
}