* {
  box-sizing: border-box;
}

body {
  font-family: Arial;
  margin: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  justify-content: flex-start;
}

header {
  padding: 40px;
  text-align: center;
  background: #13293d;
  color: #fff;
}

nav {
  display: flex;
  /* Align the child elements to the right side of the parent */
  justify-content: flex-end;
  background-color: #d8a47f;
}

nav a {
  color: #13293d;
  padding: 14px 20px;
  text-decoration: none;
  text-align: center;
}

footer {
  padding: 20px;
  text-align: center;
  background: #13293d;
  color: #fff;
  margin-top: auto;
}

.product {
  display: flex;
  /* Align the child elements to the top of the parent */
  align-items: flex-start;
  width: 90%;
  margin: 1% auto;
}

.product button {
  font-size: 150%;
}

.product-slideshow {
  display: flex;
  /* Align the child elements to the center of the parent */
  align-items: center;
}

.product-image {
  width: 100%;
}

.product-details {
  margin-left: 3%;
  flex: 0 0 60%;
}

@media screen and (max-width: 768px) {
  main,
  nav,
  .product {
    flex-direction: column;
  }

  .product-slideshow button {
    /* Removes the slideshow buttons from the document flow */
    display: none;
  }

  .product-details {
    margin-left: 0;
  }
}