Responsive Topic Details.

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Topic Details </title>
  <!-- Bootstrap  -->
  <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
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  <!-- Bootstrap Icons  -->
  <link rel="stylesheet" href="styles.css">
</head>
<body>
  <!-- Start NavBar  -->
  <nav class="navbar navbar-expand-lg">
    <div class="container">
        <a class="navbar-brand" target="_blank" href="https://codezillaye.com/Frontend/Bootstrap/">
            <i class="bi-back"></i>
            <span>Topic</span>
        </a>

        <div class="d-lg-none ms-auto me-4">
            <a href="#top" class="navbar-icon bi-person smoothscroll"></a>
        </div>

        <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
            <span class="navbar-toggler-icon"></span>
        </button>

        <div class="collapse navbar-collapse" id="navbarNav">
            <ul class="navbar-nav ms-lg-5 me-lg-auto">
                <li class="nav-item">
                    <a class="nav-link click-scroll" target="_blank" href="https://codezillaye.com/Frontend">Home</a>
                </li>

                <li class="nav-item">
                    <a class="nav-link click-scroll" target="_blank" href="https://codezillaye.com/Articles">Browse Topics</a>
                </li>

                <li class="nav-item">
                    <a class="nav-link click-scroll" target="_blank" href="https://codezillaye.com/articles/">How it works</a>
                </li>

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                    <a class="nav-link click-scroll" target="_blank" href="https://codezillaye.com/articles/">FAQs</a>
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                    <a class="nav-link click-scroll" target="_blank" href="https://codezillaye.com/articles/">Contact</a>
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                <li class="nav-item dropdown">
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                        <li><a class="dropdown-item" target="_blank" href="https://codezillaye.com/Backend/">Backend</a></li>

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            </ul>

            <div class="d-none d-lg-block">
                <a href="#top" class="navbar-icon bi-person smoothscroll"></a>
            </div>
        </div>
    </div>
</nav>
  <!-- End NavBar  -->

   <!-- Strart Header  -->
    <header class="site-header d-flex flex-column justify-content-center align-items-center  ">
    <div class="container">
        <div class="row justify-content-center align-items-center">

            <div class="col-lg-5 col-12 mb-5">
                <nav aria-label="breadcrumb">
                    <ol class="breadcrumb">
                        <li class="breadcrumb-item">
                          <a target="_blank" href="https://codezillaye.com/">Homepage</a>
                        </li>

                        <li class="breadcrumb-item active" aria-current="page">Web Design</li>
                    </ol>
                </nav>

                <h2 class="text-white">Introduction to <br> Web Design 101</h2>

                <div class="d-flex align-items-center mt-5">
                    <a target="_blank" href="https://codezillaye.com/Backend" class="btn custom-btn custom-border-btn smoothscroll me-4">Read More</a>

                    <a href="#top" class="custom-icon bi-bookmark smoothscroll"></a>
                </div>
            </div>

            <div class="col-lg-5 col-12">
                <div class="rounded float-end">
                    <img src="https://codezillaye.com/wp-content/uploads/2024/06/topic.jpg" class=" img-thumbnail">
                </div>
            </div>

        </div>
    </div>
</header>
 <!-- End Header  -->
  <!-- Bootstrap Js  -->
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</body>
</html>
/*
Global Styles 
*/

/*---------------------------------------
  CUSTOM PROPERTIES ( VARIABLES )             
-----------------------------------------*/
:root {
  --white-color:                  #ffffff;
  --primary-color:                #13547a;
  --secondary-color:              #80d0c7;
  --section-bg-color:             #f0f8ff;
  --custom-btn-bg-color:          #ffeb3b;
  --custom-btn-bg-hover-color:    #13547a;
  --dark-color:                   #607d8b96;
  --p-color:                      #717275;
  --border-color:                 #7fffd4;
  --link-hover-color:             #13547a;

  --body-font-family:             'Open Sans', sans-serif;
  --title-font-family:            'Montserrat', sans-serif;

  --h1-font-size:                 58px;
  --h2-font-size:                 46px;
  --h3-font-size:                 32px;
  --h4-font-size:                 28px;
  --h5-font-size:                 24px;
  --h6-font-size:                 22px;
  --p-font-size:                  20px;
  --menu-font-size:               14px;
  --btn-font-size:                18px;
  --copyright-font-size:          16px;

  --border-radius-large:          100px;
  --border-radius-medium:         20px;
  --border-radius-small:          10px;

  --font-weight-normal:           400;
  --font-weight-medium:           500;
  --font-weight-semibold:         600;
  --font-weight-bold:             700;
}

body {
  background-color: var(--white-color);
  font-family: var(--body-font-family); 
}


/*---------------------------------------
  TYPOGRAPHY               
-----------------------------------------*/

h2,
h3,
h4,
h5,
h6 {
  color: var(--dark-color);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--title-font-family); 
  font-weight: var(--font-weight-semibold);
}

h1 {
  font-size: var(--h1-font-size);
  font-weight: var(--font-weight-bold);
}

h2 {
  font-size: var(--h2-font-size);
  font-weight: var(--font-weight-bold);
}

h3 {
  font-size: var(--h3-font-size);
}

h4 {
  font-size: var(--h4-font-size);
}

h5 {
  font-size: var(--h5-font-size);
}

h6 {
  color: var(--primary-color);
  font-size: var(--h6-font-size);
}

p {
  color: var(--p-color);
  font-size: var(--p-font-size);
  font-weight: var(--font-weight-normal);
}

ul li {
  color: var(--p-color);
  font-size: var(--p-font-size);
  font-weight: var(--font-weight-normal);
}

a, 
button {
  touch-action: manipulation;
  transition: all 0.3s;
}

a {
  display: inline-block;
  color: var(--primary-color);
  text-decoration: none;
}

a:hover {
  color: var(--link-hover-color);
}

b,
strong {
  font-weight: var(--font-weight-bold);
}


/*---------------------------------------
  SECTION               
-----------------------------------------*/
.section-padding {
  padding-top: 100px;
  padding-bottom: 100px;
}

.section-bg {
  background-color: var(--section-bg-color);
}

.section-overlay {
  background-image: linear-gradient(15deg, #13547a 0%, #80d0c7 100%);
  position: absolute;
  top: 0;
  left: 0;
  pointer-events: none;
  width: 100%;
  height: 100%;
  opacity: 0.85;
}

.section-overlay + .container {
  position: relative;
}

.tab-content {
  background-color: var(--white-color);
  border-radius: var(--border-radius-medium);
  -webkit-border-radius: var(--border-radius-medium);
  -moz-border-radius: var(--border-radius-medium);
  -ms-border-radius: var(--border-radius-medium);
  -o-border-radius: var(--border-radius-medium);
}

.nav-tabs {
  border-bottom: 1px solid #ecf3f2;
  margin-bottom: 40px;
  justify-content: center;
}

.nav-tabs .nav-link {
  border-radius: 0;
  border-top: 0;
  border-right: 0;
  border-left: 0;
  color: var(--p-color);
  font-family: var(--title-font-family);
  font-size: var(--btn-font-size);
  font-weight: var(--font-weight-medium);
  padding: 15px 25px;
  transition: all 0.3s;
}

.nav-tabs .nav-link:first-child {
  margin-right: 20px;
}

.nav-tabs .nav-item.show .nav-link, 
.nav-tabs .nav-link.active,
.nav-tabs .nav-link:focus, 
.nav-tabs .nav-link:hover {
  border-bottom-color: var(--primary-color);
  color: var(--primary-color);
}


/*---------------------------------------
  CUSTOM ICON COLOR               
-----------------------------------------*/
.custom-icon {
  color: var(--secondary-color);
}


/*---------------------------------------
  CUSTOM BUTTON               
-----------------------------------------*/
.custom-btn {
  background: var(--custom-btn-bg-color);
  border: 2px solid transparent;
  border-radius: var(--border-radius-large);
  color: var(--white-color);
  font-size: var(--btn-font-size);
  font-weight: var(--font-weight-semibold);
  line-height: normal;
  transition: all 0.3s;
  padding: 10px 20px;
  -webkit-border-radius: var(--border-radius-large);
  -moz-border-radius: var(--border-radius-large);
  -ms-border-radius: var(--border-radius-large);
  -o-border-radius: var(--border-radius-large);
}

.custom-btn:hover {
  background: var(--custom-btn-bg-hover-color);
  color: var(--white-color);
}

.custom-border-btn {
  background: transparent;
  border: 2px solid var(--custom-btn-bg-color);
  color: var(--custom-btn-bg-color);
}

.custom-border-btn:hover {
  background: var(--custom-btn-bg-color);
  border-color: transparent;
  color: var(--white-color);
}

.custom-btn-bg-white {
  border-color: var(--white-color);
  color: var(--white-color);
}
/* End Global styles  */
/*---------------------------------------
 Strat  NAVIGATION              
-----------------------------------------*/
.sticky-wrapper {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
}

.sticky-wrapper.is-sticky .navbar {
  background-color: var(--secondary-color);
}

.navbar {
  background: var(--dark-color);
  border-bottom: 1px solid rgba(128, 208, 199, 0.35);
  z-index: 9;
}

.navbar-brand,
.navbar-brand:hover {
  font-size: var(--h3-font-size);
  font-weight: var(--font-weight-bold);
  display: block;
}

.navbar-brand span {
  font-family: var(--title-font-family);
}
.navbar-brand span {
  color: var(--border-color);
}

.navbar-expand-lg .navbar-nav .nav-link {
  border-radius: var(--border-radius-large);
  margin: 10px;
  padding: 10px;
  -webkit-border-radius: var(--border-radius-large);
  -moz-border-radius: var(--border-radius-large);
  -ms-border-radius: var(--border-radius-large);
  -o-border-radius: var(--border-radius-large);
}

.navbar-nav .nav-link {
  display: inline-block;
  color: var(--white-color);
  font-family: var(--title-font-family); 
  font-size: var(--menu-font-size);
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  position: relative;
  padding-top: 15px;
  padding-bottom: 15px;
}

.navbar-nav .nav-link.active, 
.navbar-nav .nav-link:hover {
  color: var(--secondary-color);
}

.navbar .dropdown-menu {
  background: var(--white-color);
  box-shadow: 0 1rem 3rem rgba(0,0,0,.175);
  border: 0;
  display: inherit;
  opacity: 0;
  min-width: 9rem;
  margin-top: 20px;
  padding: 13px 0 10px 0;
  transition: all 0.3s;
  pointer-events: none;
  -webkit-transition: all 0.3s;
  -moz-transition: all 0.3s;
  -ms-transition: all 0.3s;
  -o-transition: all 0.3s;
}

.navbar .dropdown-menu::before {
  content: "";
  width: 0;
  height: 0;
  border-left: 20px solid transparent;
  border-right: 20px solid transparent;
  border-bottom: 15px solid var(--white-color);
  position: absolute;
  top: -10px;
  left: 10px;
}

.navbar .dropdown-item {
  display: inline-block;
  color: var(--p-bg-color);
  font-family: var(--title-font-family); 
  font-size: var(--menu-font-size);
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  position: relative;
}

.navbar .dropdown-item.active, 
.navbar .dropdown-item:active,
.navbar .dropdown-item:focus, 
.navbar .dropdown-item:hover {
  background: transparent;
  color: var(--primary-color);
}

.navbar .dropdown-toggle::after {
  content: "\f282";
  display: inline-block;
  font-family: bootstrap-icons !important;
  font-size: var(--copyright-font-size);
  font-style: normal;
  font-weight: normal !important;
  font-variant: normal;
  text-transform: none;
  line-height: 1;
  vertical-align: -.125em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
  left: 2px;
  border: 0;
}
/* Media style  */
@media screen and (min-width: 992px) {
  .navbar .dropdown:hover .dropdown-menu {
    opacity: 1;
    margin-top: 0;
    pointer-events: auto;
  }
}

.navbar-icon {
  background: var(--white-color);
  border-radius: var(--border-radius-large);
  display: inline-block;
  font-size: var(--h5-font-size);
  width: 40px;
  height: 40px;
  line-height: 40px;
  text-align: center;
  transition: all 0.3s ease;
}

.navbar-icon:hover {
  background: var(--primary-color);
  color: var(--white-color);
}

.navbar-toggler {
  border: 0;
  padding: 0;
  cursor: pointer;
  margin: 0;
  width: 30px;
  height: 35px;
  outline: none;
}

.navbar-toggler:focus {
  outline: none;
  box-shadow: none;
}

.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon {
  background: transparent;
}

.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon:before,
.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon:after {
  transition: top 300ms 50ms ease, -webkit-transform 300ms 350ms ease;
  transition: top 300ms 50ms ease, transform 300ms 350ms ease;
  transition: top 300ms 50ms ease, transform 300ms 350ms ease, -webkit-transform 300ms 350ms ease;
  top: 0;
}

.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon:before {
  transform: rotate(45deg);
}

.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon:after {
  transform: rotate(-45deg);
}

.navbar-toggler .navbar-toggler-icon {
  background: var(--white-color);
  transition: background 10ms 300ms ease;
  display: block;
  width: 30px;
  height: 2px;
  position: relative;
}

.navbar-toggler .navbar-toggler-icon:before,
.navbar-toggler .navbar-toggler-icon:after {
  transition: top 300ms 350ms ease, -webkit-transform 300ms 50ms ease;
  transition: top 300ms 350ms ease, transform 300ms 50ms ease;
  transition: top 300ms 350ms ease, transform 300ms 50ms ease, -webkit-transform 300ms 50ms ease;
  position: absolute;
  right: 0;
  left: 0;
  background: var(--dark-color);
  width: 30px;
  height: 2px;
  content: '';
}

.navbar-toggler .navbar-toggler-icon::before {
  top: -8px;
}

.navbar-toggler .navbar-toggler-icon::after {
  top: 8px;
}

/* End Navigations  */

/*---------------------------------------
  SITE HEADER              
-----------------------------------------*/
.site-header {
  background-image: linear-gradient(15deg, #13547a 0%, #80d0c7 100%);
  padding-top: 150px;
  padding-bottom: 80px;
}

.site-header .container {
  height: 100%;
}

.breadcrumb-item+.breadcrumb-item::before,
.breadcrumb-item a:hover,
.breadcrumb-item.active {
  color: var(--white-color);
}

.site-header .custom-icon {
  color: var(--white-color);
  font-size: var(--h4-font-size);
}

.site-header .custom-icon:hover {
  color: var(--secondary-color);
}