:root {
    --color-bg: white;
    --color-border: black;
    --color-primary: gainsboro;
    --color-text: black;

    --border-width: 2px;
    --border-width-thin: 1px;
    --border-radius: 4px;
}

/* default element styling */
body {
    max-width: 940px;
    margin: 0 auto;
    padding: 2rem;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
}

summary {
    font-weight: bold;
    padding: 0 0 1rem;
}

details {
    margin-top: 16px;
}

label {
    font-weight: bold;
    color: var(--color-text);
    text-align: left;
    padding-top: 0;
    margin-bottom: 3px;
}

input[type="password"],
textarea,
select {
    width: 100%;
    padding: 5px 6px;
    border: var(--border-width-thin) solid var(--color-border);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    resize: none;
    box-sizing: border-box;
}

button {
    padding: 10px 20px;
    border: var(--border-width-thin) solid var(--color-border);
    border-radius: var(--border-radius);
    background-color: var(--color-primary);
    color: var(--color-text);
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    box-sizing: border-box;
}

.post-form-items {
    margin-bottom: 10px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 6px;
    align-items: start;
}

.posts {
    list-style: none;
    padding: 0;
    margin: 0.5rem 0 0 0;
}

.post {
    margin-bottom: 1em;
    padding-left: 0.5em;
}

time {
    color: var(--color-text);
    font-size: 0.8em;
    margin-bottom: 0.4em;
}

.post-text {
    color: var(--color-text);
    font-size: 1.0em;
    display: block;
}