td {font-size : 10pt; line-height:140%; font-family:dotum;}

.header_title {
    font-family: Verdana, sans-serif;
    font-weight: bold;
    font-size: xx-large;
    text-decoration: none;
    color:NAVY;
}
.table_frame {
    width: 100%;
    max-width: 600px;
    /*text-align: center;*/
    margin: auto;
    border: none;
    align-self: center;
}
.dropdown:hover > .dropdown-menu,
.dropend:hover > .dropdown-menu {
    display: block;
    margin-top: 0.125em;
    margin-left: 0.125em;
}
.apps-layout {
    margin: auto;
    text-align: center;
    max-width: 600px;
}
.ad-layout {
    margin: auto;
    text-align: center;
    max-width: 480px;
    max-height: 100px;
}
.ads-wrapper.hidden {
    height: 0;
    overflow: hidden;
    margin: 0;
}
#btn-back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: none;
}
.fs-7 {
    font-size: 0.75rem;
}

/* line numbers */
.line-numbers-wrapper {
    display: flex;
    border: 1px solid #ced4da;
    border-radius: 0.375rem;
    overflow: hidden;
    background-color: #fff;
    /*height: 300px; !* 고정 높이 설정 *!*/
    height: 100%;
}
.line-numbers {
    min-width: 50px; /* 3자리수까지 넉넉하게 표시 */
    background-color: #f8f9fa;
    border-right: 1px solid #ced4da;
    color: #6c757d;
    text-align: right;
    padding: 0.375rem 0.5rem;
    font-family: var(--bs-font-monospace);
    font-size: 1rem;
    line-height: 1.5;
    letter-spacing: -0.1em;
    overflow: hidden;
    user-select: none;
    white-space: nowrap;
}
.line-numbers-textarea {
    border: none;
    resize: none;
    outline: none;
    box-shadow: none;
    font-family: var(--bs-font-monospace);
    font-size: 1rem;
    line-height: 1.5;
    white-space: pre;
    overflow: auto; /* 가로/세로 스크롤 모두 허용 */
    width: 100%;
    height: 100%;
}
.line-numbers-textarea:focus {
    box-shadow: none;
    border-color: transparent;
}
.line-numbers-wrapper:focus-within {
    border-color: #86b7fe;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}