* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Open Sans', sans-serif;
  font-size: 16px;
  background: gray;
  color: #333;
}

a {
  text-decoration: none;
}

.button {
  padding: 10px;
  border-radius: 5px;
  display: inline-block;
  background: steelblue;
  color: white;
  font-size: 12px;
  font-weight: bold;
}

.container {
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
}

.header {
  overflow: hidden;
  height: 65px;
}

.header a {
  color: inherit;
}

.header a:hover {
  font-weight: bold;
}

.header-logo {
  float: left;
}

.header-nav {
  float: right;
}

.header-nav ul li {
  display: inline-block;
  margin: 0 20px;
}

.products {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}

.product {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  max-width: 310px;
  width: 100%;
  padding: 10px;
  margin-bottom: 10px;
  border-radius: 5px;
  background: azure;
}


.product span {
  font-weight: bold;
}

.product-image img {
  display: block;
  max-width: 228px;
  width: 100%;
  margin: 0 auto;
}

.
.row .product:last-child {
  margin-right: 0;
}

.product-add-to-cart {
  overflow: hidden;
  clear: both;
  margin-top: 10px;
}

.see-more {
  float: left;
  background: limegreen;
}

.add-to-cart {
  float: right;
}

.shopping-cart {
  position: fixed;
  top: 0;
  right: 0;
  width: 300px;
  min-heigh: 300px;
  margin-right: 20px;
  margin-top: 10px;
  padding: 20px;
  background: wheat;
}

.shopping-cart-head {
  background: steelblue;
  color: white;
  padding: 5px;
}

.shopping-cart,
.shopping-cart-head {
  border-radius: 5px;
}

.empty-cart-btn,
.cart-checkout {
  display: none;
  
}

.empty-cart-btn {
  margin-bottom: 5px;
}

.cart-checkout {
  background: limegreen;
}