editor.css

div#ks-editor section {
    border: 1px lightgrey solid;
    border-radius: 1px;
    margin: 5px;
    padding: 2.5px;
    width: auto;
}

div#ks-editor section > * {
    margin: 2.5px;
}

div#ks-editor *.selected {
    background-color: lightblue;
}

div#ks-editor *.hidden {
    display: none;
}

div#ks-editor input[type="text"] {
    border-top-style: none;
    border-left-style: none;
    border-right-style: none;
    letter-spacing: normal;
}

div#ks-editor .medium-width {
    max-width: 20rem;
}

div#ks-editor .small-width {
    max-width: 5rem;
}

div#ks-editor input#node-name {
    font-size: large;
    font-weight: bolder;
}

div#ks-editor .bottom-space {
    margin-bottom: 1rem;
}

div#ks-editor textarea {
    max-width: 100%;
    resize: both;
    letter-spacing: normal;
}

div#ks-editor img.preview-image {
    max-width: 5rem;
    height: auto;
}