html{
  font-size: 62.5%; /* default is 16px X 62.5 = 10px = 1rem */
  box-sizing: border-box;
}
body{
  font: 1.6rem Helvetica;
  height: 100vh;  /* view port height */
  margin: 0;
}
.grid-container{
  display: grid;
  grid-template-areas:
  "header"
  "main"
  "footer";
  grid-template-columns: 1fr; /* fragment */
  grid-template-rows: 5rem 1fr 5rem;
  height: 100%;
}
.header{
  grid-area: header;
  background-color: #203040;
  color: #fff000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5 rem;
}
.brand a{
  color: #ffffff;
  font-size: 2.5rem;
  font-weight: bold;
  text-decoration: none;
}
.header-links a{
  color: #ffffff;
  text-decoration:none;
}
.header-links a:hover{
  color: #ff8000;
  text-decoration: none;
}
.main{
  grid-area: main;
}
.footer{
  grid-area: footer;
  background-color: #203040;
  color: #fff000;
  display: flex;
  justify-content: center;
  align-items:center;
}
a{
  text-decoration: none;
}
a:hover{
  color:#ff8000;
}
/* Home Screen */
.products{
  display:flex;
  justify-content:center;
  align-items:center;
  flex-wrap: wrap;
}
.products li {
  list-style-type: none;
  padding: 0;
  flex: 0 1 34rem;
  margin: 1rem;
  height: 50 rem;
  border-bottom: .1rem #c0c0c0 solid;
}
.product{
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
}
.product-name{
  font-size: 2rem;
  font-weight: bold;
}
.product-brand{
  font-size: 1.2rem;
  color: #808080;
}
.product-price{
  font-size: 2rem;
  font-weight: bold;
}
.product-rating{
  margin-bottom: 1rem;
}
.product-image{
  border-radius: 15px;
  max-width: 60rem;
  max-height: 60rem;
}
.brand button{
  font-size: 3rem;
  padding: .5rem;
  background: none;
  border: none;
  color: #ffffff;
  cursor: pointer;
}
.sidebar{
  position: fixed;
  transform: translateX(-30rem);
  width: 30rem;
  background-color: #f0f0f0;
  height: 100%;
}
.sidebar.open{
  transform: translateX(0);
}
.sidebar-close-button{
  border-radius: 50%;
  border: .1rem #000000 solid;
  width: 3rem;
  height: 3rem;
  padding: .5rem;
  font-size: 2rem;
  padding-top: 0;
  cursor: pointer;
  position: absolute;
  right: .5rem;
  top: 1.5rem;
}