body {
    margin: 0;
    }
    
  /*Everything goes inside here.*/
  .wrapper {
    width: 900px;
    margin: 0 auto;
    }
    
  .sidebar-img, .footer, .title, .links, .box {
    margin-top: 25px;
    }
    
  .title, .links, .footer {
    text-align: center;
    }
    
  /*Navigation links.*/
  .links ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
    }
    
  .links li {
    display: inline-block;
    }
  
  /*Some fancy code for fun, to add special characters around the navigation links. Change content to "" if you don't want these.*/
  .links li:before {
    content: " ";
    }
    
  .links li:after {
    content: " ";
    }
    
  .links .last:after {
    content: " ";
    }
    
  .links li:before, .links li:after {
    letter-spacing: 0.1em;
    }
    
  /*Basic box code that is used for all content boxes on the page.*/
  .box {
    border: 1px solid black;
    padding: 0.5em 1em;
    }
    
  /*Goes inside the box class. Not given any style by default, but can be used for stuff like fancy borders.*/
  .inner {
    
    }
    
  /*Prevent image overflow.*/
  .box img, .sidebar img {
    max-width: 100%;
    height: auto;
    }
    
  /*Wrapper for the sidebar.*/
  .sidebar {
    width: 200px;
    float: left;
    }
    
  /*Container for the sidebar image.*/
  .sidebar-image {
    border: 1px solid black;
    }
    
  /*Remove extra padding line at the bottom of the image.*/
  .sidebar-image img {
    display: block;
    }
    
  /*This is where the title, navbar, and main content all go.*/
  .main-wrapper {
    margin-left: 225px;
    }
    
  /*Two columns by default. The "single-column" class can be added to make it one column.*/
  .main {
    columns: 2;
    column-gap: 25px;
    }
    
  /*Make sure boxes don't spread over multiple columns.*/
  .main .box {
    display: inline-block;
    }
    
  .single-column {
    columns: 1;
    }
    
  .footer {
    margin-bottom: 25px;
    }
    
  @media(max-width:915px) {
    .wrapper {    
      width: 95%;
      }
      
    .main-wrapper {
      width: calc(100% - 225px);
      }
    }
    
  @media (orientation: portrait), (max-width: 480px) {
    .wrapper {
      width: 100%;
      }
    
    .main-wrapper, .sidebar, .footer {
      margin: 0 auto;
      width: 90%;
      }
    
    .sidebar {
      float: none;
      display: block;
      }
  
    .sidebar-image {
      margin: 0 auto;
      width: 33%;
      margin-top:25px;
      }
  
    .sidebar .sidebar-image img {
      width: 100%;
      }
      
    .footer {
      margin-bottom: 25px;
      }
    
    }