.jumbotron {
  display: flex;
  background-image: url('http://www.pixelstalk.net/wp-content/uploads/2016/05/Bing-Best-Wallpapers-Background-Download-Free.jpg');
  background-size: cover;
  height: 250px;
}
header{
  
  font-family: 'Titillium Web', sans-serif;
  background-color: #f7faff;
  border-radius: 5px;
}
.nav_items:hover{
  text-decoration: none;
  font-size: 25px;
}
#logo:hover{
  text-decoration: none;
  
}
body{
  font-family: 'Libre Baskerville', serif;
  text-align: justify;
  font-family: 'Roboto', sans-serif;
}
p{
  font-size: 17px;
}
#guides {
  font-family: 'Source Sans Pro', sans-serif;
}
#sidebar{
  font-size: 20px;
  font-family: 'Montserrat', sans-serif;
}
.sidebar_items:hover{
  text-decoration: none;
}
i{
  margin-right:10px;
}
footer{
  border-radius: 10px;
  background-color: #f7faff;
  opacity: 0.5;
  text-align: center;
  height: 75px;
  padding: 20px;
}