//bootstrap_opt_index.css
:root {
    --blue:#007bff;--indigo:#6610f2;--purple:#6f42c1;--pink:#e83e8c;--red:#dc3545;--orange:#fd7e14;--yellow:#ffc107;--green:#208837;--teal:#20c997;--cyan:#17a2b8;--white:#fff;--gray:#6c757d;--gray-dark:#343a40;--primary:#007bff;--secondary:#6c757d;--success:#208837;--info:#17a2b8;--warning:#ffc107;--danger:#dc3545;--light:#f8f9fa;--dark:#343a40;--breakpoint-xs:0;--breakpoint-sm:576px;--breakpoint-md:768px;--breakpoint-lg:992px;--breakpoint-xl:1200px;--font-family-sans-serif:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-family-monospace:SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;}
*, *::before, *::after {
    box-sizing: border-box;
}
html {
    font-family: sans-serif;
    line-height: 1.15;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}
article, aside, figcaption, figure, footer, header, hgroup, main, nav, section {
    display: block;
}
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    color: #212529;
    text-align: left;
    background-color: #fff;
}
[tabindex="-1"]:focus {
    outline: 0 !important;
}
h1, h2, h3, h4, h5, h6 {
    margin-top: 0;
    margin-bottom: 0.5rem;
}
p {
    margin-top: 0;
    margin-bottom: 1rem;
}
abbr[title], abbr[data-original-title] {
    text-decoration: underline;
    -webkit-text-decoration: underline dotted;
    text-decoration: underline dotted;
    cursor: help;
    border-bottom: 0;
    -webkit-text-decoration-skip-ink: none;
    text-decoration-skip-ink: none;
}
address {
    margin-bottom: 1rem;
    font-style: normal;
    line-height: inherit;
}
ol, ul, dl {
    margin-top: 0;
    margin-bottom: 1rem;
}
ol ol, ul ul, ol ul, ul ol {
    margin-bottom: 0;
}
b, strong {
    font-weight: bolder;
}
small {
    font-size: 80%;
}
a {
    color: #007bff;
    text-decoration: none;
    background-color: transparent;
}
a:hover {
    color: #0056b3;
    text-decoration: underline;
}
figure {
    margin: 0 0 1rem;
}
img {
    vertical-align: middle;
    border-style: none;
}
svg {
    overflow: hidden;
    vertical-align: middle;
}
label {
    display: inline-block;
    margin-bottom: 0.5rem;
}
button {
    border-radius: 0;
}
button:focus {
    outline: 1px dotted;
    outline: 5px auto -webkit-focus-ring-color;
}
input, button, select, optgroup, textarea {
    margin: 0;
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
}
button, input {
    overflow: visible;
}
button, select {
    text-transform: none;
}
button, [type="button"], [type="reset"], [type="submit"] {
    -webkit-appearance: button;
}
button:not(:disabled), [type="button"]:not(:disabled), [type="reset"]:not(:disabled), [type="submit"]:not(:disabled) {
    cursor: pointer;
}
h1, h2, h3, h4, h5, h6, .h1, .h2, .h3, .h4, .h5, .h6 {
    margin-bottom: 0.5rem;
    font-weight: 500;
    line-height: 1.2;
}
h1, .h1 {
    font-size: 2.5rem;
}
h2, .h2 {
    font-size: 2rem;
}
h3, .h3 {
    font-size: 1.75rem;
}
h4, .h4 {
    font-size: 1.5rem;
}
h5, .h5 {
    font-size: 1.25rem;
}
.lead {
    font-size: 1.25rem;
    font-weight: 300;
}
small, .small {
    font-size: 80%;
    font-weight: 400;
}
.container {
    width: 100%;
    padding-right: 15px;
    padding-left: 15px;
    margin-right: auto;
    margin-left: auto;
}
@media (min-width: 576px) {
    .container {
        max-width:540px;
    }
}
@media (min-width: 768px) {
    .container {
        max-width:720px;
    }
}
@media (min-width: 992px) {
    .container {
        max-width:960px;
    }
}
@media (min-width: 1200px) {
    .container {
        max-width:1140px;
    }
}
.container-fluid {
    width: 100%;
    padding-right: 15px;
    padding-left: 15px;
    margin-right: auto;
    margin-left: auto;
}
.row {
    display: -ms-flexbox;
    display: flex;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    margin-right: -15px;
    margin-left: -15px;
}
.col-1, .col-2, .col-3, .col-4, .col-5, .col-6, .col-7, .col-8, .col-9, .col-10, .col-11, .col-12, .col, .col-auto, .col-sm-1, .col-sm-2, .col-sm-3, .col-sm-4, .col-sm-5, .col-sm-6, .col-sm-7, .col-sm-8, .col-sm-9, .col-sm-10, .col-sm-11, .col-sm-12, .col-sm, .col-sm-auto, .col-md-1, .col-md-2, .col-md-3, .col-md-4, .col-md-5, .col-md-6, .col-md-7, .col-md-8, .col-md-9, .col-md-10, .col-md-11, .col-md-12, .col-md, .col-md-auto, .col-lg-1, .col-lg-2, .col-lg-3, .col-lg-4, .col-lg-5, .col-lg-6, .col-lg-7, .col-lg-8, .col-lg-9, .col-lg-10, .col-lg-11, .col-lg-12, .col-lg, .col-lg-auto, .col-xl-1, .col-xl-2, .col-xl-3, .col-xl-4, .col-xl-5, .col-xl-6, .col-xl-7, .col-xl-8, .col-xl-9, .col-xl-10, .col-xl-11, .col-xl-12, .col-xl, .col-xl-auto {
    position: relative;
    width: 100%;
    padding-right: 15px;
    padding-left: 15px;
}
@media (min-width: 992px) {
    .col-lg-6 {
        -ms-flex: 0 0 50%;
        flex: 0 0 50%;
        max-width: 50%;
    }
}
.form-control {
    display: block;
    width: 100%;
    height: calc(1.5em + 0.75rem + 2px);
    padding: 0.375rem 0.75rem;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    color: #495057;
    background-color: #fff;
    background-clip: padding-box;
    border: 1px solid #ced4da;
    border-radius: 0.25rem;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}
.form-control::-webkit-input-placeholder {
    color: #6c757d;
    opacity: 1;
}
.form-control::placeholder {
    color: #6c757d;
    opacity: 1;
}
.btn {
    display: inline-block;
    font-weight: 400;
    color: #212529;
    text-align: center;
    vertical-align: middle;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    background-color: transparent;
    border: 1px solid transparent;
    padding: 0.375rem 0.75rem;
    font-size: 1rem;
    line-height: 1.5;
    border-radius: 0.25rem;
    transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}
.btn-success {
    color: #fff;
    background-color: #208837;
    border-color: #208837;
}
.input-group {
    position: relative;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    -ms-flex-align: stretch;
    align-items: stretch;
    width: 100%;
}
.input-group > .form-control, .input-group > .form-control-plaintext, .input-group > .custom-select, .input-group > .custom-file {
    position: relative;
    -ms-flex: 1 1 auto;
    flex: 1 1 auto;
    width: 1%;
    margin-bottom: 0;
}
.input-group > .form-control:not(:last-child), .input-group > .custom-select:not(:last-child) {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}
.input-group > .form-control:not(:first-child), .input-group > .custom-select:not(:first-child) {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}
.input-group-prepend, .input-group-append {
    display: -ms-flexbox;
    display: flex;
}
.input-group-prepend .btn, .input-group-append .btn {
    position: relative;
    z-index: 2;
}
.input-group-prepend {
    margin-right: -1px;
}
.input-group-append {
    margin-left: -1px;
}
.input-group-text {
    display: -ms-flexbox;
    display: flex;
    -ms-flex-align: center;
    align-items: center;
    padding: 0.375rem 0.75rem;
    margin-bottom: 0;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    color: #495057;
    text-align: center;
    white-space: nowrap;
    background-color: #e9ecef;
    border: 1px solid #ced4da;
    border-radius: 0.25rem;
}
.input-group > .input-group-prepend > .btn, .input-group > .input-group-prepend > .input-group-text, .input-group > .input-group-append:not(:last-child) > .btn, .input-group > .input-group-append:not(:last-child) > .input-group-text, .input-group > .input-group-append:last-child > .btn:not(:last-child):not(.dropdown-toggle), .input-group > .input-group-append:last-child > .input-group-text:not(:last-child) {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}
.input-group > .input-group-append > .btn, .input-group > .input-group-append > .input-group-text, .input-group > .input-group-prepend:not(:first-child) > .btn, .input-group > .input-group-prepend:not(:first-child) > .input-group-text, .input-group > .input-group-prepend:first-child > .btn:not(:first-child), .input-group > .input-group-prepend:first-child > .input-group-text:not(:first-child) {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}
.clearfix::after {
    display: block;
    clear: both;
    content: "";
}
.d-none {
    display: none !important;
}
.d-block {
    display: block !important;
}
@media (min-width: 576px) {
    .d-sm-block {
        display: block !important;
    }
}