.json {
    font-family: "Source Code Pro", monospace;
    font-size: 16px;
}

    .json > .json__item {
        display: block;
    }

.json__item {
    display: none;
    margin-top: 10px;
    padding-left: 20px;
    user-select: none;
}

.json__item--collapsible {
    cursor: pointer;
    overflow: hidden;
    position: relative;
}

    .json__item--collapsible::before {
        content: "+";
        position: absolute;
        left: 5px;
    }

    .json__item--collapsible::after {
        background-color: lightgrey;
        content: "";
        height: 100%;
        left: 9px;
        position: absolute;
        top: 26px;
        width: 1px;
    }

    .json__item--collapsible:hover > .json__key,
    .json__item--collapsible:hover > .json__value {
        text-decoration: underline;
    }

.json__toggle {
    display: none;
}

    .json__toggle:checked ~ .json__item {
        display: block;
    }

.json__key {
    color: darkblue;
    display: inline;
}

    .json__key::after {
        content: ": ";
    }

.json__value {
    display: inline;
}

.json__value--string {
    color: green;
}

.json__value--number {
    color: blue;
}

.json__value--boolean {
    color: red;
}