e: small;
            overflow: auto;
            padding: 5px;
        }

        .test-tree {
            font-size: small;
            overflow: auto;
            padding: 5px;
        }

        .CodeMirror {
            flex: 3;
            height: 100%;
            border: 1px solid #eee;
        }

        .file-div {
            margin: 0px;
            white-space: nowrap;
            padding: 2px;
            margin-top: 1px;
            margin-bottom: 1px;
        }

        .file-div:hover {
   