.CodeMirror-dialog { position: relative; } .CodeMirror-dialog > div { position: absolute; top: 0; left: 0; right: 0; background: white; border-bottom: 1px solid #eee; z-index: 15; padding: .1em .8em; overflow: hidden; color: #333; } .CodeMirror-dialog input { border: none; outline: none; background: transparent; width: 20em; color: inherit; font-family: monospace; } .CodeMirror-dialog button { font-size: 70%; }