stylesheet.css

html, * {
    padding: 0;
    margin: 0;
}

body {
    background-image: url("http://i.huffpost.com/gen/1946936/images/o-YOSEMITE-VALLEY-facebook.jpg");
    background-repeat: no-repeat;
    background-size: cover;
}

/* Add a black background color to the top navigation */
.topnav {
  background-color: #333;
  overflow: hidden;
  margin: 10%;
  width: 80%;
  height: 45px;
  -moz-box-shadow:0 0 8px #666;
  -webkit-box-shadow:0 0 8px #666;
  box-shadow:0 0 8px #666;
}

#content {
    margin: 10%;
    width: 80%
    background: #ffffff;
    text-align: left;
    -moz-box-shadow:0 0 8px #666;
    -webkit-box-shadow:0 0 8px #666;
    box-shadow:0 0 8px #666;
    background-color: #ffffff;
}

#text {
    padding: 40px;
}

/* Add a black background color to the top navigation bar */
.topnav {
  overflow: hidden;
  background-color: #e9e9e9;
}

/* Style the search box inside the navigation bar */
.topnav input[type=text] {
  float: right;
  padding: 6px;
  border: none;
  margin-top: 8px;
  margin-right: 16px;
  font-size: 17px;
}