.footer {
    position: relative;
    bottom: 0;
    width: 100%;
    height: 40px;
    line-height: 40px;
    margin-top: 30px;
}

.footer p {
    display: inline-block;
    margin-right: 5px;
}

.footer a {
    font-weight: 600;
    color: #495057;
    text-decoration: underline;
}

.footer .text-muted {
    font-size: 14px;
}

/* 图形验证码弹窗 */
#captcha-img {
    display: block;
    margin: 0 auto;
    border: 1px solid #dee2e6;
    border-radius: 4px;
    cursor: pointer;
    height: 50px;
}

#captcha-refresh-hint {
    text-align: center;
    font-size: 12px;
    color: #6c757d;
    margin-top: 4px;
}