@font-face { font-family: 'Fira Sans'; src: url('firasans-regular-webfont.eot'); src: url('firasans-regular-webfont.eot?#iefix') format('embedded-opentype'), url('firasans-regular-webfont.woff') format('woff'), url('firasans-regular-webfont.ttf') format('truetype'); font-weight: normal; font-style: normal; } html { font-family: "Fira Sans"; height: 100%; color: #8c959c; background: #f8f9fa; text-align: center; } .dark { background: #444a4f; color: #919497; } body { display: -webkit-flex; display: -ms-flexbox; display: flex; -webkit-flex-direction: column; -ms-flex-direction: column; flex-direction: column; -webkit-justify-content: center; -ms-flex-pack: center; justify-content: center; -webkit-align-items: center; -ms-flex-align: center; align-items: center; height: 100%; min-height: 600px; margin: 0; padding: 40px 10px; -webkit-box-sizing: border-box; box-sizing: border-box; overflow-x: hidden; } body.error-message { height: auto; } pre { text-align: left; padding-bottom: 1em; background: white; color: #222; } h1 { margin: 0; color: #444a4f; } .dark h1 { color: white; } a { color: #f1d158; text-decoration: none; } a:visited { color: #ccb250; } ul { text-align: left; } p { max-width: 400px; margin: 0 0 20px; } .error-image { height: 650px; width: 100%; margin: 30px 0; background-size: contain; background-position: center; background-repeat: no-repeat; }