body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
.content {
  margin-top: 50px;
  flex: 1;
}
.product-list {
  display: flex;
  justify-content:center;
  margin-bottom: 50px;
}
.product-list li {
  margin: 0 15px;
  position: relative;
}
.product-list .head {
  font-size: 18px;
  font-weight: bolder;
  position: absolute;
  left: -1px;
  top: -24px;
}
.product-list .img {
  width: 253px;
  height: 253px;
  margin-bottom: 15px;
}
.product-list .text {
  color: #333;
  text-align: center;
}
.footer {
  background-color: #0066E4;
  width: 100%;
  text-align: center;
  padding: 15px 0;
}
.footer a {
  color: #eee;
}