html {
    font-size: 10px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

/* ---------------------------------------------------
    SIDEBAR STYLE
----------------------------------------------------- */
#sidebar {
    background: radial-gradient(at top, rgb(231,244,252), rgb(172,224,248));
    border-radius: 10px;
    border-color: rgb(23,163,204);
    margin-left: 8px;
    margin-right: 8px;
    border-style: solid;
    border-width: 2px;
    padding-top: 20px;
    padding-bottom: 20px;
    font-size: 1.1em;
}

#sidebar a {
    padding: 10px;
    display: block;
    text-decoration: none;
}

#sidebar a:hover {
    color: rgb(155,134,213);
    background: rgb(255,255,255);
    transition: all 0.3s;
}
.table {
    --bs-table-bg: transparent;
}
.captcha-input {
    min-width: 4em !important; /* 4個字元寬度 */
    max-width: 6em;
    width: 4em;
    text-align: center;
    letter-spacing: 0.2em;
    font-family: inherit;
    font-size: 1rem;
    box-sizing: content-box;
    border:  solid var(--bs-border-color);
}