/* Base */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.4;
  color: #222;
  background: #f7f7f7;
}

/* Header & Nav */
header {
  background: #ffffff;
  border-bottom: 1px solid #ddd;
  padding: 16px;
  text-align: center;
}
header h1 { margin: 0; font-size: 28px; }
.tagline { margin: 4px 0 10px; color: #555; }
nav a {
  display: inline-block;
  margin: 0 8px;
  padding: 6px 10px;
  text-decoration: none;
  color: #0044aa;
}
nav a:hover, nav a:focus { text-decoration: underline; }

/* Layout */
main {
  max-width: 1000px;
  margin: 24px auto;
  padding: 0 12px;
  text-align: center
}

/* Product */
.product {
  display: inline-block;
  vertical-align: top;
  width: 300px;
  margin: 10px;
  text-decoration: none; /* entire card is clickable */
  color: inherit;
}
.product article {
  background: #fff;
  border: 1px solid #ddd;
  padding: 12px;
}
.product figure { margin: 0; }
.product img {
  width: 100%;
  height: auto;
  border: 1px solid #e6e6e6;
}
.product figcaption {
  font-weight: bold;
  margin-top: 8px;
}
.price { font-weight: bold; margin: 8px 0 4px; }
.desc { margin: 0 0 6px; color: #444; }

/* Footer */
footer {
  text-align: center;
  color: #666;
  padding: 20px 10px;
}

/* Accessibility helper class */
.visually-hidden {
  position: absolute;
  left: -9999px;
  width: 1px; height: 1px;
  overflow: hidden;
}