index.css

body {
    margin: 0;
    font-family: Helvetica;
}
.container {
    display: flex;
    flex-direction: row-reverse;
}
.sidebar {
    display: inline-block;
    padding: 10px;
    background-color: #198eff;
    width: 400px;
    color: #fff;
}
.divider {
    border-top: 1px solid #06f;
    margin: 5px;
}
.section_title {
    font-size: 120%;
    font-weight: bold;
    margin-bottom: 5px;
    display: block;
}
.tile_file {
    background-color: #009cff;
    margin: 5px 0;
    padding: 5px;
    cursor: pointer;
}
.tile_file input {
    display: block;
    margin-top: 5px;
}
.tile_file#all {
    background-color: #00b7ff;
}
.list_entry {
    background-color: #00b7ff;
    padding: 5px;
    margin-bottom: 5px;
}
.list_entry #expand {
    cursor: pointer;
    display: inline-block;
    padding: 0 4px;
    font-size: 80%;
    background-color: #00a5ff;
    vertical-align: middle;
    margin-right: 5px;
    border-radius: 4px;
    border: 1px solid #0081ff;
}
.list_entry .remove {
    float: right;
    margin-right: 5px;
    color: #bc0000;
    cursor: pointer;
}
.cfg_bar {
    margin-top: 5px;
    display: flex;
}
.cfg_bar .fieldset:last-child {
    margin-left: auto;
}
.field {
    margin: 5px;
}
.field label {
    margin-right: 5px;
    display: inline-block;
}
.field input {
    width: 100px;
}
pre {
    overflow: auto;
    background-color: #fff;
    color: #000;
    padding: 5px;
}