body {
    background-color: #e0f0ff; /* 青色申告から連想した青、ただし明るめ。 */
}

main {
    display: flex;
    flex-direction: row;
    padding: 0 1rem;
    max-width: 100%;
}

main > .side-nav {
    width: 28rem;
    min-width: 24rem;
}
main > .side-nav ul {
    list-style: none;
}
main > .container {
    flex-grow: 1;
}

a[disabled] {
    pointer-events: none;
}
a:not(.button)[disabled] {
    font-weight: normal;
}

ul {
    margin-top: 0.5rem;
    margin-bottom: 0.5rem;
}

fieldset {
    border: 1px solid #b0b0b0;
    padding: 1rem;
    margin-top: 2rem;
    margin-bottom: 2.5rem;
}
fieldset > legend {
    padding: 0 1rem;
}

form.search {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
}

div.input.text,
div.input.date,
div.input.number,
/*div.input.checkbox,*/
div.input.select
{
    display: inline-block;
    margin-right: 2rem;
}

textarea {
    height: auto;
}

form div.input.error input {
    margin-bottom: 0.1rem;
}
form .error-message {
    color: red;
}

.ib {
    display: inline-block;
}

h1 {
    margin-top: 0.2rem; /* 上にobjectがあるケースが激レアなので */
    margin-bottom: 0.2rem;
}
h2 {
    margin-top: 1.5rem;
    margin-bottom: 0.2rem;
}
h3 {
    margin-top: 1.2rem;
    margin-bottom: 0.2rem;
}
h4 {
    margin-top: 1rem;
    margin-bottom: 0.1rem;
}
h5 {
    margin-top: 0.8rem;
    margin-bottom: 0.1rem;
}
h6 {
    margin-top: 0.6rem;
    margin-bottom: 0.1rem;
}

input[type='color'], input[type='date'], input[type='datetime'], input[type='datetime-local'], input[type='email'], input[type='month'], input[type='number'], input[type='password'], input[type='search'], input[type='tel'], input[type='text'], input[type='url'], input[type='week'], input:not([type]) {
    width: auto;
    max-width: 100%;
}
input[type='number'] {
    text-align: right;
}
select {
    width: max-content;
}

footer {
    text-align: center;
    color: #a0a0a0;
    margin: 2rem auto;
}

.small {
    font-size: 8px;
}