*{margin:0;padding:0;box-sizing:border-box}body,html{height:100%}body{background:linear-gradient(135deg,#e4efe9,#7db9e8);background-attachment:fixed;font-family:Helvetica,Arial,sans-serif}.site-wrap{display:flex;flex-direction:column;height:100vh;align-items:center;justify-content:space-between}#demo-header{text-align:center;width:100%}#demo-header nav{text-align:left;background-color:#efefef;display:block}#main_content{padding-bottom:50px;flex:1;width:100%;display:flex;flex-direction:column;align-items:center;max-width:1280px;margin:auto}#active-lang{width:75%;border-collapse:collapse}#active-lang td{border:1px solid #666;padding:5px}.lang-key{font-family:Courier New,Courier,monospace;text-align:right}