body.page-content { height: 100%; width: auto; margin-top: 20px; background: url("assets/background_iot_bzh_light.jpg") 0 0 no-repeat; background-size: cover; background-position: center; } img { float: right; } #question, #output, #outevt { white-space: pre-wrap; } button { margin-right: 10px; padding: 6px 8px; font-size: large; } pre { outline: 1px solid #ccc; padding: 5px; margin: 5px; background-color: white; opacity: 0.85; min-height: 5pc; max-height: 10pc; overflow: auto; } pre#output { max-height: 30pc; } .string { color: green; } .number { color: darkorange; } .boolean { color: blue; } .null { color: magenta; } .key { color: red; }