html,
body,
h1,
h2,
h3,
h4,
h5,
h6,
p,
b {
    margin: 0;
    padding: 0;
}

ul {
    padding: 0;
    margin: 0;
}

@font-face {
    font-family: kalpurush;
    src: url(webfonts/kalpurush.ttf);
}

body {
    font-family: kalpurush;
    font-size: 16px;
    background: #efefef;
}

p {
    text-align: justify;
    font-size: 16px;
    line-height: 20px;
}

.btn.btn-link:hover:active:focus {
    text-decoration: none !important;
    outline: 0 !important;
}

.card {
    border: none !important;
}
.btn.btn-link {
    color: #333;
}
.btn.btn-link.collapsed:active {
    outline: 0;
    text-decoration: none;
}
.kha-section {
    background: #FFF;
    padding: 10px 0;
}
.board-ref {
    background:
    #DDD;
    padding: 5px;
    margin-top: 5px;
}
.qyone {
    color: #2980b9;
}
.qytwo {
    color: #e74c3c;
}
.qyfour {
    color: #1abc9c;
}


textarea:focus,
input:focus {
    outline: none;
}

*:focus {
    outline: none;
}

a {
    text-decoration: none;
    color: #333333;
    font-size: 16px;
    transition: .5s;
}

a {
    outline: 0;
}

a:hover {
    text-decoration: none;
    color: #e74c3c;
}

a:focus {
    text-decoration: none;
}

img {
    max-width: 100%;
}

pre {
    background: #f9f9f9;
    border: 1px solid #ddd;
    padding: 5px 2px;
    font-family: inherit;
}

.header-area {
    background: #ffffff;
    overflow: hidden;
    padding: 10px 0;
    margin-bottom: 10px;
    border-bottom: 1px solid #ddd;
}

.header-area img {
    height: auto;
}
.hs {
    border-bottom: 1px solid #333;
    font-weight: bold;
    font-size: 16px;
    margin-top: 10px;
    margin-bottom: 4px;
}
.logo {
    float: left;
}

.logo img {
    width: 200px;
    height: auto;
}

.header-menu-bar {
    float: right;
    margin-top: 7px;
    border: 1px solid #ddd;
    padding: 3px 9px;
}

.menu-logo {
    background: #ededed;
    padding: 20px 10px;
}

.menu-logo img {
    width: 80px;
    text-align: center;
    display: block;
    margin: 0 auto;
    margin-bottom: 10px;
}

.menu-logo p,
.menu-logo b {
    text-align: center;
    line-height: 22px;
    display: block;
}

.menu-logo p {
    color: #4d4d4d;
}

.main-menu {
    background: #ddd;
    overflow: hidden;
    margin-bottom: 15px;
    width: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 999999;
    box-shadow: 0px 0px 10px #c0c0c0;
    height: 100%;
    display: none;
    width: 80%;
    background: #FFFFFF;
    height: 100%;
}

.main-menu ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.main-menu ul li {
    border-bottom: 1px solid #ddd;
}

.main-menu ul li:last-child {
    border-bottom: none;
}

.main-menu ul li a {
    padding: 8px 10px;
    display: block;
}

.menu-content-center {
    display: block;
    text-align: center;
    margin-top: 20px;
}

.menu-content-center a {
    border: 1px solid #3498db;
    padding: 5px 10px;
    color: #3498db;
}

.menu-content-center a:hover {
    border: 1px solid #e74c3c;
    color: #e74c3c;
}

.highlight-text {
    background: #FFFFFF;
    padding: 15px 5px;
    margin-bottom: 15px;
}

.highlight-text p {
    text-align: center;
}
.ictclass-button {
    background: #e74c3c;
    text-align: center;
    display: block;
    padding: 5px;
    margin-top: 10px;
    color: #FFFFFF !important;
    font-size: 17px;
}
.version-text {
    text-align: center;
    background: #3498db;
    color: #FFFFFF;
    margin-top: 10px;
}
.home-title {
	font-weight: bold;
	margin-top: 10px;
	font-size: 19px;
	background: #FFF;
	border-left: 5px solid #000;
	padding: 5px 10px;
}
.content-item {
    background: #FFFFFF;
    padding: 10px 2px;
    transition: 1.5s;
    text-align: center;
    box-shadow: 1px 2px 6px rgba(58, 57, 68, 0.15);
}

.content-item.last-content i {
    color: #3498db;
}

.content-item.last-content i {
    color: #3498db;
}

.content-item.last-content h2 a {
    color: #e74c3c;
}

.content-item h2 a {
    text-align: center;
    display: block;
    color: #3d3d3d;
    font-size: 20px;
}

.content-item h2 {
    text-align: center;
    color: #3d3d3d;
    font-size: 16px;
    font-weight: bold;
}
.content-style-one h2 {
  font-weight: bold;
}
.content-item.content-style-one p {
    text-align: center;
}
.content-area:hover a {
    color: #3d3d3d;
}

.content-item img {
    text-align: center;
    margin: 0 auto;
    width: 60px;
    height: 60px;
    margin-bottom: 5px;
}
.about-text a {
  color: #e74c3c;
}
.topic-desc {
    background: #e6e6e6;
    border-left: 5px solid #3498db;
    padding: 10px;
    margin-top: 10px;
    margin-bottom: 10px;
}
.img-left {
  width: 120px;
height: auto;
float: left;
margin-right: 10px;
}
.exam-page {
    background: #FFFFFF;
    padding: 15px;
    margin-bottom: 15px;
    border: 1px solid #ddd;
}
.heading-sub {
    font-size: 17px;
    font-weight: bold;
    margin-top: 10px;
    border-bottom: 2px solid #333;
    margin-bottom: 3px;
}
.exam-text a {
    color: #e74c3c;
}

.exam-text ul {
    margin-left: 20px;
}

.exam-text span i {
    font-size: 13px;
}

.exam-text span {
    font-size: 16px;
}

.afc-item-a ul {
    list-style: none;
}

#accordion h3 i {
    float: right;
    padding: 2px;
}

.update-page {
    background: #FFFFFF;
    padding: 15px;
    margin-bottom: 15px;
    border: 1px dashed #ddd;
}

.update-text a {
    color: #e74c3c;
}

.update-page p {
    text-align: center;
}


.chapter-title {
    background: #FFFFFF;
    border: 1px solid #ddd;
    margin-bottom: 10px;
    text-align: center;
    padding: 15px 5px;
}

.chapter-title h2 {
    font-size: 22px;
    text-align: center;
}

.chapter-title p {
    text-align: center;
    color: #666;
}

.mcq-item {
    border: 1px solid #ddd;
    background: #FFFFFF;
    padding: 10px;
    overflow: hidden;
    margin-bottom: 10px;
}

.mcq-item h2 {
    font-size: 16px;
    font-weight: bold;
}

.mcq-item ul {
    margin-left: 20px;
    list-style: circle;
    margin-bottom: 5px;
}

.correct-ans {
    background: #3498db;
    color: #FFF;
    padding: 3px 5px;
    margin-bottom: 5px;
}

.about-page {
    background: #FFFFFF;
    padding: 10px;
    border: 1px solid #ddd;
    margin-bottom: 15px;
}

.about-profile {
    background: #ffffff;
    padding: 10px;
    margin-top: 35px;
    position: relative;
    border: 1px solid #ddd;
}
.profile-social {
    overflow: hidden;
    margin: 10px auto;
}
.about-title {
    position: absolute;
    top: -17px;
    left: 35%;
    background: #FFFFFF;
    border: 1px solid #ddd;
    padding: 5px 10px;
    font-size: 18px;
    font-weight: bold;
}

.about-profile b {
    display: block;
    text-align: center;
}

.about-profile p {
    text-align: center;
}

.about-profile img {
    width: 170px;
    height: auto;
    border-radius: 10px;
    display: block;
    text-align: center;
    margin: 10px auto;
    margin-top: 20px;
}

.exam-page {
    background: #FFFFFF;
    padding: 15px;
    margin-bottom: 15px;
    border-top: 5px solid #3498db;
}

.exam-text a {
    display: block;
    text-align: center;
    background: #2980b9;
    color: #FFFFFF;
    padding: 5px;
    margin-top: 10px;
    transition: 1s;
}

.exam-text a:hover {
    background: #e74c3c;
}

/**** AFC Page ****/

.afc-page {
    margin-bottom: 20px;
}

.afc-text {
    background: #FFFFFF;
    padding: 15px;
    border: 1px solid #ddd;
}

.afc-item {
    background: #FFFFFF;
    padding: 15px;
    margin-bottom: 15px;
    border-top: 5px solid #3498db;
}

.afc-page a {
    color: #3498db;
}

.text-desc {
    background: #FFFFFF;
    margin-bottom: 15px;
    border-left: 5px solid #3498db;
    padding: 10px;
}

.text-desc a {
    color: #3498db;
}

.sample-output {
    border: 1px solid #ddd;
    padding: 10px;
    margin-bottom: 15px;
    font-family: inherit;
}

.sample-output p {
    font-family: inherit;
}

.accordion-page {
    margin-bottom: 20px;
}

.accordion-text {
    background: #FFFFFF;
    padding: 15px;
    border: 1px solid #ddd;
}

.accordion-item {
    background: #FFFFFF;
    padding: 15px;
    margin-bottom: 15px;
    border-top: 5px solid #3498db;
}

#accordion h3 {
    background: #2c3e50;
    color: #FFFFFF;
    padding: 10px;
    font-size: 17px;
    font-weight: bold;
    margin-top: 15px;
    cursor: pointer;
}

#accordion h4 {
    background: #f3f3f3;
    padding: 5px 10px;
    font-size: 18px;
    font-weight: bold;
    border-left: 5px solid #3498db;
    margin-top: 10px;
    margin-bottom: 5px;
}

.sample-output a {
    text-decoration: underline;
}

.sample-output h3 {
    background: inherit !important;
    color: inherit !important;
    padding: 0 !important;
    font-size: 1.75rem !important;
    font-weight: inherit !important;
    margin-top: inherit !important;
    cursor: inherit !important;
}

.sample-output h4 {
    background: inherit !important;
    padding: 0 !important;
    font-size: 1.5rem !important;
    font-weight: inherit !important;
    border-left: none !important;
    margin-top: inherit !important;
    margin-bottom: 0 !important;
}

.afc-item-f img {
    padding: 10px 30px;
}

.accordion-item ul {
    margin-left: 20px;
}

.footer-area {
    background: #3498db;
    color: #FFFFFF;
    padding: 15px 5px;
}

.footer-area p {
    text-align: center;
}

.footer a {
    color: #FFFFFF !important;
    font-weight: bold;
}

.chapter-title a {
    color: #e74c3c;
}


.sample-output input[type="text"] {
    width: 100%;
    border: 1px solid #ddd;
    padding: 5px;
    border-radius: 5px;
}

.sample-output form p {
    margin-bottom: 0;
    font-family: inherit;
    margin-top: 10px;
}

.sample-output textarea {
    width: 100%;
    margin-bottom: 5px;
}

.sample-output input[type="number"] {
    width: 100%;
    border: 1px solid #ddd;
    padding: 5px;
    border-radius: 5px;
}

.sample-output input[type="password"] {
    width: 100%;
    border: 1px solid #ddd;
    padding: 5px;
    border-radius: 5px;
}

.menu-close a i {
    position: absolute;
    right: 0;
    padding: 10px;
    font-size: 25px;
}

.s-b {
    border-top: 2px solid #3d3d3d;
}

.d-t {
    border-top: 6px double #3d3d3d;
}
.sb {
    border-top: 2px solid #3d3d3d;
}
.db {
    border-top: 2px double #3d3d3d;
}
.ba-tt td {
    text-align: center;
}
.truth-table {
  margin-top: 20px;
}
.truth-table img {
    border: 1px solid #ddd;
    padding: 5px;
    margin-bottom: 20px;
}
.about-designation {
    font-size: 16px;
    color: #545454;
    margin-bottom: 10px;
}
.output-text {
    font-weight: bold;
    margin-top: 10px;
}
.sample-output-another {
    background: #f2f2f2;
    padding: 10px;
}
.profile-social ul {
    list-style: none;
    text-align: center;

}
.profile-social ul li {
    display: inline;
    margin-left: 10px;
}
.profile-social ul li a {
    padding: 5px 10px;
    display: inline-block;
    border: 1px solid #ddd;
}
.output-text-another {
  background: #f3f3f3;
  padding: 3px 8px;
  font-size: 16px;
  font-weight: bold;
  margin-top: 15px;
  margin-bottom: 5px;
  border: 2px solid #3d3d3d;
  text-align: left;
}

.accordion-item table th {
    vertical-align: middle;
}

.example-text {
    border-left: 5px solid #3d3d3d;
    padding: 10px;
    background: #ddd;
    margin-top: 10px;
    margin-bottom: 5px;
}

.practice-item {
    overflow: hidden;
    border-top: 5px solid #3498db;
    background: #FFFFFF;
    margin: 15px 0;
}

.practice-question {
    font-size: 16px;
    font-weight: bold;
    background: #fff;
    border-bottom: 1px solid #ddd;
    padding: 5px;
    font-weight: bold;
}

.practice-solution-btn {
    background: #3498db;
    border: 1px solid #3498db;
    color: #FFFFFF;
    width: 100%;
    display: block;
    cursor: pointer;
    padding: 5px;
    text-align: center;
    font-weight: bold;
}
.practice-solution-btn:hover {
    color: #FFFFFF;
}
.practice-ans {
    padding: 10px;
}
.practice-desc .pd-title {
    display: block;
    border-bottom: 1px solid #c5c5c5;
    padding: 5px;
}
.practice-desc {
    background: #FFFFFF;
}
.chapter-text {
    background: #FFFFFF;
    padding: 10px;
    border: 1px solid #ddd;
    margin-bottom: 15px;
}
.chapter-text ul {
    margin-left: 15px;
}
.topic-content {
    overflow: hidden;
}
.topic-content ul {
    list-style: none;
    margin: 0;
    padding: 0;
    text-align: center;
}
.topic-content ul li {
    margin-right: 5px;
    margin-bottom: 15px;
    display: inline-block;
}
.topic-content ul li a {
    background: #3498db;
    color: #FFFFFF;
    padding: 5px 8px;
}
.topic-heading {
    font-size: 20px;
    margin-bottom: 12px;
    border-bottom: 1px solid #c6c6c6;
    line-height: 34px;
    text-align: center;
    font-weight: bold;
}
.chapter-mpopup ul {
    margin-left: 15px;
}
.chapter-mpopup th {
    vertical-align: middle !important;
    text-align: center;
}
.program-desc li {
    padding: 5px 0;
    border-bottom: 1px solid #ddd;
}
.program-desc li:last-child {
    border-bottom: none;
}
.sample-ques {
    padding: 5px;
}
.content-item h2 span {
    font-size: 16px;
    color: #717171;
}
.content-style-one i {
    color: #3498db;
}
.content-style-two i {
    color: #e74c3c;
}
.highlight-text a {
    font-weight: bold;
    color: #e74c3c;
}
.ns-ques-list {
    margin-left: 5px;
    margin-top: 5px;
    margin-bottom: 10px;
    list-style: none;
}
.solution-button {
    margin: 10px;
}
.table-cent td, th {
    text-align: center;
}
.table td, .table th {
    padding: 5px;
}
.guideline-page p {
    margin-bottom: 5px;
}
.guideline-page ul {
    margin-left: 15px;
}
.guideline-page ul li {
    text-align: justify;
}

.offline-heading {
    font-size: 20px;
    font-weight: bold;
    text-align: center;
    margin-bottom: 7px;
}
.content-another img {
    width: 50px;
    height: 50px;
    margin-bottom: 5px;
}
.content-another h2 {
    font-size: 16px;
    font-weight: bold;
}
.content-another {
    padding-top: 15px;
    padding-bottom: 7px;
    padding-left: 2px;
    padding-right: 2px;
}
.btn.btn-link:hover {
    text-decoration: none !important;
}
.btn.btn-link:focus {
    text-decoration: none !important;
    outline: 0 !important;
}
.btn {
    white-space: inherit !important;
    text-align: left;
}
.practice-main {
    padding: 5px;
}
.bottom-special-link {
    position: fixed;
    right: 10px;
    bottom: 10px;
    background: #3498db;
    color: #FFFFFF;
    text-align: center;
    display: block;
    padding: 6px 10px;
}
.bottom-special-link:hover {
  color: #FFFFFF;
}
.about-text {
    background: #FFF;
    padding: 10px;
    margin-bottom: 10px;
}
.bottom-menu {
  overflow: hidden;
}
.col-section-item {
    width: 32%;
    margin-right: 2%;
    float: left;
}
.col-section-last {
  margin-right: 0 !important;
}

/**** hover style ***/

.stylish-hover {
  border: 2px solid transparent;
  transition: 8s;
}
.stylish-hover img {
  transition: 8s;
}
.stylish-hover:hover {
  border-top: 2px solid #3498db;
  border-bottom: 2px solid #34495e;
  border-left: 2px solid #e74c3c;
  border-right: 2px solid #16a085;
}
.stylish-hover:hover img {
  transform: rotate(720deg);
}
.join-button {
    background: #34495e;
    display: block;
    text-align: center;
    margin-top: 5px;
    color: #FFFFFF !important;
    padding: 7px 3px;
    font-weight: bold;
}
.join-button:hover {
  background: #e74c3c;
  color: #FFFFFF !important;
}

/* =====================================================================
   RESPONSIVE FIXES — mobile / tablet / desktop
   Applies site-wide since every page loads this stylesheet.
   ===================================================================== */

*, *::before, *::after {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
    overflow-x: hidden;
}

body {
    overflow-x: hidden;
}

/* Any <table> (Bootstrap .table included) becomes horizontally
   scrollable on its own instead of breaking page width on small
   screens. This works even on tables that were not wrapped in a
   .table-responsive div. */
@media (max-width: 767.98px) {
    table {
        display: block;
        width: 100%;
        max-width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
}

/* Code / sample-output blocks shouldn't force the page to scroll */
pre {
    overflow-x: auto;
    max-width: 100%;
    -webkit-overflow-scrolling: touch;
}

/* Long unbroken words/links/tokens (common in code + Bangla text)
   should wrap instead of overflowing the viewport */
p, li, td, th, .sample-output, .accordion-item, .exam-text {
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* Header / logo scale down gracefully */
@media (max-width: 767.98px) {
    .logo img {
        width: 140px;
    }
    .header-menu-bar a {
        font-size: 1.1rem;
    }
}

@media (max-width: 420px) {
    .logo img {
        width: 110px;
    }
}

/* Float-based image (used inside long-form content) shouldn't
   crowd the text on narrow phones */
@media (max-width: 480px) {
    .img-left {
        width: 90px;
        margin-right: 8px;
    }
}

/* .col-section-item is a legacy 3-column float grid (not Bootstrap
   grid) used on a few pages — make it stack properly instead of
   squeezing 3 fixed-width columns onto small screens */
@media (max-width: 767.98px) {
    .col-section-item {
        width: 48%;
        margin-right: 4% !important;
        margin-bottom: 12px;
    }
    .col-section-item:nth-child(2n) {
        margin-right: 0 !important;
    }
}

@media (max-width: 480px) {
    .col-section-item {
        width: 100%;
        float: none;
        margin-right: 0 !important;
    }
}

/* About page title badge uses left:35% absolute positioning which
   can drift off-center on narrow screens; keep it centered instead */
@media (max-width: 480px) {
    .about-title {
        left: 50%;
        transform: translateX(-50%);
        white-space: nowrap;
        font-size: 15px;
    }
}

/* Slightly tighten paddings/headings on phones so more content is
   visible without feeling cramped */
@media (max-width: 480px) {
    .chapter-title h2 {
        font-size: 19px;
    }
    .topic-heading {
        font-size: 17px;
        line-height: 26px;
    }
    .home-title {
        font-size: 16px;
    }
    .about-profile img {
        width: 130px;
    }
}

/* Comfortable tap targets on touch devices */
@media (max-width: 767.98px) {
    .main-menu ul li a,
    .btn,
    .exam-text a,
    .join-button,
    .practice-solution-btn {
        min-height: 40px;
    }
}


/* Legal pages & footer links */
.legal-text{text-align:left;line-height:1.8}
.legal-text h3{font-size:18px;margin:22px 0 8px}
.legal-text ul{padding-left:22px}
.legal-links{margin-top:10px;font-size:14px}
.legal-links a{margin:0 6px}

/* ---- AdSense ad slot (use only on pages with long original content) ----
   Keeps ads clear of buttons, cards and links so visitors do not click by accident. */
.ad-slot{display:block;clear:both;margin:32px auto;padding:0;text-align:center;min-height:90px;max-width:100%;overflow:hidden}
.ad-slot::before{content:"বিজ্ঞাপন";display:block;font-size:11px;color:#8a97a6;margin-bottom:4px;letter-spacing:.5px}

/* guideline page headings */
.guideline-page h1{font-size:24px;text-align:center;margin:6px 0 14px;line-height:1.4}
.guideline-page h2{font-size:21px;margin:4px 0 10px}
.guideline-page h3{font-size:18px;margin:16px 0 6px}