Probleme avec html et css

body {
  
  color:MidnightBlue;
  padding: 0;
  margin: 0;
 background: #f7f7f7;
  /* Old browsers */
 background: -moz-linear-gradient(45deg, #f7f7f7 0%, #EAE0D5 100%);
  /* FF3.6-15 */
  background: -webkit-linear-gradient(45deg, #f7f7f7 0%, #EAE0D5 100%);
  /* Chrome10-25,Safari5.1-6 */
 background: linear-gradient(45deg, #f7f7f7 0%, #EAE0D5 100%);
 
} 

/** Header styles **/

.header {
  background-image: url("[https://s3.amazonaws.com/codecademy-content/courses/web-101/unit-4/htmlcss1-img_coffee-bgnd.jpeg%22); https://s3.amazonaws.com/codecademy-content/courses/web-101/unit-4/htmlcss1-img_coffee-bgnd.jpeg");|nofollow]
  height: 400px;
  background-position: center center;
}

h1 {
  
  
  font-family: 'Covered By Your Grace', sans-serif;
  font-size: 100px;
  line-height: 76px;
  margin: 0;
  position: relative;
  text-align: center;
  top: 20%;
}

/** List style **/

h2 {
  color: #E4BB97;
  font-family: 'Raleway', sans-serif;
  font-size: 28px;
  font-weight: 500;
  text-align: left;
  text-transform: uppercase;
}

ul {
  margin: 0 auto;
  padding: 0;
  width: 50%;
}

li {
  border-bottom: 1px solid #E4BB97;
  list-style: none;
  margin: 100px 0px;
  padding-bottom: 60px;
}

p {
  color: #444444;
  line-height: 32px;
  font-family: 'Raleway', sans-serif;
  font-size: 20px;
  font-weight: 100;
}

a {
  color: #214E34;
  font-family: 'Raleway', sans-serif;
  font-size: 13px;
  font-weight: 900;
  text-align: left;
  text-transform: uppercase;
  text-decoration: none;
  letter-spacing: 2px;
}