:root {
                --header-image: url(header1.jpg);
                --content: DarkSlateBlue;
            }

            body {
                font-family: 'Nunito', sans-serif;
                margin: 0;
                color: #f7fbfc;
                background-image: url("background2.jpg");
            }

            * {
                box-sizing: border-box;
            }

            /* layout */

            #container {
                max-width: 900px;
                margin: 0 auto;
            }

            #container a:link {
                color: LightSteelBlue;
            }
            #container a:visited {
                color: DarkSlateGray;
            }

            
            #header {
                width: 100%;
                background-color: #4062bc;
                height: 150px;
                background-image: var(--header-image);
                background-size: 100%;
            }

            #navbar {
                height: 40px;
                background-color: SlateGrey;
                width: 100%;
            }

            #navbar ul {
                display: flex;
                padding: 0;
                margin: 0;
                list-style-type: none;
                justify-content: space-evenly;
            }

            #navbar li {
                padding-top: 10px;
            }

            #navbar li a {
                font-weight: 800;
                text-decoration: none;
            }

            #navbar li a:hover {
                color: SkyBlue;
                text-decoration: underline;
            }

            #flex {
                display: flex;
            }

            aside {
                background-color: #1c3987;
                width: 200px;
                padding: 20px;
                font-size: smaller;
            }

            main {
                background-color: #424242;
                flex: 1;
                padding: 20px;
                order: 2;
            }

             #rightSidebar {
                order: 3;
            }

            footer {
                background-color: SlateGrey;
                width: 100%;
                height: 40px;
                padding: 10px;
                text-align: center;
            }

            h1,
            h2,
            h3,
            h4{
                color: SkyBlue;
            }

            h1 {
                font-size: 25px;
            }

            strong {
                color: White;
            
            }
            
             .box {
                background-color: #4e5b7f;                
                border-top: 5px solid CornflowerBlue;
                border-bottom: 5px solid CornflowerBlue;
                padding: 10px;
                padding-top: 5px;
                padding-left: 15px;
            }
            
            .box2 {
                background-color: #4e5b7f;                
                border-top: 5px solid CornflowerBlue;
                padding: 10px;
                padding-top: 5px;
                padding-left: 15px;
            }
            
            .box3 {
                background-color: #4e5b7f;
                padding: 10px;
                padding-top: 5px;
                padding-left: 15px;
            }
            
            .scroll {
              margin: 10px 0px 15px 0px;
              max-height: 500px;
              width: auto;
              overflow-x: scroll;
              }

            /* ??? */

            #topBar {
                width: 100%;
                height: 30px;
                padding: 10px;
                font-size: smaller;
                background-color: #092d1a;
            }

            @media only screen and (max-width: 800px) {
                #flex {
                    flex-wrap: wrap;
                }

                aside {
                    width: 100%;
                }

                main {
                    order: 1;
                
                }

                #rightSidebar {
                    order: 3;
                }

                #navbar ul {
                    flex-wrap: wrap;
                }
            }