:root {
                --header-image: url('Hexagon4.svg');
                --body-bg-image: url('Hexagon.svg');
                --main-image: url(Hexagon2.svg);
                --sidebar-image: url('Hexagon3.svg');

                /* colors */
                --content: #6b0000;
            }
            
                        body {
                font-family: Arial;
                margin: 0;
                background-size: 65px;
                background-image: var(--body-bg-image);
            }
            
            {
                box-sizing: border-box;
            }
            
                #container {
                max-width: 900px;
                margin: 0 auto;
            }
            
        #header {
                width: 100%;
                height: 150px;
                background-image: var(--header-image);
                background-size: 100%;
            }

    aside {
                background-image: var(--sidebar-image);
                width: 200px;
                padding: 20px;
                font-size: smaller;
 
            }
            
            main {
                background-image: var(--main-image);
                flex: 1;
                padding: 20px;
                order: 2;
            }
            
            #leftSidebar {
                order: 1;
            }

            #rightSidebar {
                order: 3;
            }

 footer {
                background-image: var(--header-image);
                width: 100%;
                height: 40px;
                padding: 10px;
                text-align: center;
            }            
            
                        h1,
            h2,
            h3 {
                color: #300000;
            }

            h1 {
                font-size: 25px;
            }

            strong {
                color: #300000;
            }

.box {
                background-color: #000221;
                border: 1px solid #000670;
                padding: 10px;
            }