Learning CSS with restaurant page

restaurant-style.css

body {
  /*color: blue;*/
  font-family: Arial, Helvetica;
  background: url("burgers.jpeg") no-repeat center center fixed;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}

header {
  background: rgba(234, 173, 91, 0.8);
  color: white;
  text-align: center;
  margin: 20px;
  padding: 20px 20px 40px;  /*works like a clock starting at noon*/
}

header p {
  color: #8A2D0F;
  font-weight: bold;
  text-transform: lowercase;
}

#page-title {
  font-size: 3.2em;
}

.restaurant-group {
  border: 1px solid rgb(234, 173, 91);
  padding: 20px;
  margin: 20px;
  background-color: rgba(253, 236, 211, 0.9)
}

.restaurant-group h2 {
  color: blue;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: #8A2D0F;
}

.restaurant-group h3 {
  font-weight: normal;
  font-style: italic;
  color: #A2877E;
}

.restaurant-group a {
  text-decoration: none;
  border: 1px solid #8A2D0F;
  -webkit-border-radius: 10px;
  -moz-border-radius: 10px;
  -ms-border-radius: 10px;
  border-radius: 10px;
  background-color: #A2877E;
  color: white;
  padding: 10px;
}

.restaurant-group a:hover {
  background-color: white;
  color: #A2877E;
}

p {
  font-size: 1.2em;
  font-family: "Lucida Sans Unicode", "Lucida Grande", sans-serif;
  font-weight: 100; /*100-900 or bold or normal*/
  color: #333; /*darker grey*/
  line-height: 1.7;
}

/*Float the image to the right, but stop floating at the paragraph*/
.restaurant-group img {
  float: right;
}

.restaurant-group p {
  clear: both;
}