style.css

body {
    font-family: 'Roboto', sans-serif;
    background-color:#999;
}

.container .row {
    margin-left: 200px;
}

#lumpUL {
    margin-left: -35px;
    padding-right: 0;
    list-style-type: none;

    /* copied from sphinx_rtd_theme */
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    width: 300px;
    overflow-x: hidden;
    overflow-y: scroll;
    min-height: 100%;
    background: #343131;
    z-index: 200;
}

#lumpTable {
    background-color:#777;
}

li {
    border-style: solid;
    padding : 5px;
    margin : 5px;
    border-width : 2px;
    background-color: #ddd;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    cursor: default;
}

#loading {
    font-family: 'Inconsolata', monospace;
    position: fixed;
    border-style: solid;
    padding : 5px;
    border-width : 2px;
    background-color: #ddd;
}

#preview {
    font-family: 'Inconsolata', monospace;
    white-space:pre;
    position: fixed;
    border-style: solid;
    padding : 5px;
    border-width : 2px;
    background-color: #ddd;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    cursor: default;
}

#textPreview {
    height: 400px;
    overflow-y: scroll;
}

li:hover {
    background-color: #eee;
}