formats.exposed/public/png/png.css

body {
    margin: 1rem;
}

#explorer {
    display: flex;
    overflow: hidden;
}

#explorer .bytes,
#explorer .tree {
    flex: 1;
    overflow: auto;
}

#explorer .bytes {
    max-width: 15em;
    font-family: Inconsolata, Consolas, Monaco, monospace;
    font-size: 80%;
    line-height: 1.5em;
    white-space: pre-wrap;
}

#explorer .bytes span {
    cursor: pointer;
}

#explorer .bytes span.activated {
    background: var(--activated-color);
    color: var(--background-color);
}

#explorer .tree {
    padding-left: 0.5rem;
    scrollbar-gutter: stable;
}

#explorer .tree details.activated {
    outline-width: 3px;
    outline-color: var(--tree-activated-border-color);
}

#explorer .tree details {
    outline: 1px solid var(--tree-border-color);
    border-radius: 10px;
    padding: 0 0.5rem 0 0.5rem;
    transition: outline ease-out 0.1s;
    margin: 3px 3px 0.5rem 3px;
}

#explorer .tree details[open] {
    padding-bottom: 6px;
}

#explorer .tree details p:last-child {
    margin-bottom: 0;
}

#explorer .tree details .children {
    margin-left: 0.5rem;
}

#explorer .tree details summary {
    cursor: pointer;
    user-select: none;
    display: flex;
}

#explorer .tree details summary:before {
    content: "▶";
    margin-right: 0.2em;
    transition: transform ease-out 0.1s;
}

#explorer .tree details[open]>summary:before {
    transform: rotate(90deg);
}

#explorer .tree details summary:focus {
    outline: none;
}

#explorer .tree details summary .title {
    flex: 1;
    font-weight: bold;
}

#explorer .tree details summary .bytecount {
    margin-left: 0.5em;
    font-size: 75%;
    opacity: 0.5;
}

#explorer .tree details:not(.activated) {
    background: var(--background-color);
    color: var(--foreground-color);
}