*
{
 margin: 0; padding: 0;
  }

body {
  font-family: monospace;
  background: #fff;
  color: #111;
  max-width: 860px;
  margin: 40px auto;
  padding: 0 24px 60px;
}

.back { display: inline-block; margin-bottom: 24px; color: #2d7a2d; text-decoration: none; font-size: 13px; }
h1 { font-size: 20px; color: #2d7a2d; margin-bottom: 32px; }
h2 { font-size: 15px; margin: 32px 0 12px; border-bottom: 1px solid #eee; padding-bottom: 6px; }

.questions { display: flex; flex-direction: column; gap: 16px; }

.qa {
  padding: 16px;
  background: #f9f9f9;
  border-left: 3px solid #2d7a2d;
}

.q { font-weight: bold; margin-bottom: 8px; }
p { font-size: 13px; line-height: 1.6; }

pre {
  background: #111;
  color: #7fff7f;
  padding: 12px 16px;
  border-radius: 4px;
  font-size: 13px;
  overflow-x: auto;
}

/* ── Box démo ── */
.demo-row { display: flex; gap: 40px; margin-top: 16px; flex-wrap: wrap; }

.label { font-size: 12px; color: #555; margin-bottom: 8px; }

.box {
  padding: 20px;
  border: 5px solid #2d7a2d;
  background: #eafaea;
  font-size: 12px;
  color: #2d7a2d;
  text-align: center;
}

.content-box-demo { box-sizing: content-box; width: 300px; }
.border-box-demo  { box-sizing: border-box;  width: 300px; }

/* ── Centrage démo ── */
.center-demo {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 120px;
  background: #f0f0f0;
  border: 1px solid #ddd;
  margin-top: 16px;
}

.centered-box {
  padding: 16px 32px;
  background: #2d7a2d;
  color: #fff;
  font-size: 14px;
}