.chetansharma {
    background-image: url(https://images.unsplash.com/photo-1609881681616-3396828cab9f?crop=entropy&cs=tinysrgb&fit=crop&fm=jpg&h=900&ixlib=rb-1.2.1&q=80&w=1600);
    padding: 100px;
    height: 600px;
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}
@media (max-width: 480px) {
    body {
        background-image: url(https://images.unsplash.com/photo-1609881681616-3396828cab9f?crop=entropy&cs=tinysrgb&fit=crop&fm=jpg&h=900&ixlib=rb-1.2.1&q=80&w=1600);
    }
}
.chetansharma > .top-head {
    padding: 10px;
    background-color:#fd7e14;
    color: cornsilk;
    width: 250px;
    text-align: center;
    border-radius: 8px;
}
.chetansharma > .bottom-head {
    background-color: darkgoldenrod;
    color: black;
    padding: 2.5px;
    margin-top: 15px;
    width: 107px;
    border-radius: 6px;
    text-align: center;
}
.downside {
    height: 100%;
    background-image: url(https://source.unsplash.com/1600x900/?background,solid);
    padding: 100px;
    height: 600px;
}
.container{
    margin-top: 20px 
    margin-left: 50px
}
.choseus-section {
    background: #0a0a0a;
}
.container > .card-group > .card{
    background-color: black;
    position: relative;
    width: 100%;
    padding-right: 15px;
    padding-left: 15px;
   
}
.navbar{
    background: #333;
    border-bottom: 1px solid #444;
    max-height: 60px;
    position: relative;
    z-index: 22;
    color: white;
    
}

.text-white {
    color: #fff!important;
}

.container{
    background-color: black;
    padding: 60px;
    background: fixed;
}
.gettouch-section {
    background: #0a0a0a;
    padding: 30px 0 15px;
    color: white;
    align-items: center;
}
.footer-section {
    background: #000000;
    padding-top: 50px;
}
.navbar > .container-fluid i{
    font-size: 2.5em;
    padding-right: 30px;
    
}

a {
    color: white;
    /* text-decoration: underline; */
    text-decoration: none;
}
.head {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    padding: 0 15px;
    padding-top: 55px;
    z-index: 99;
}

.head > .nav-menu a {
    color:#f36100;
    font-size: large;
    font-weight: bolder;
    padding: 10px;
   
  

}
.head >   .nav-menu ul{
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: row;
    margin: 30px;
    font-size: 4em;
    
}
.head >  .nav-menu div{
    list-style: none;
    display: inline-block;
    margin-right: 32px;
    position: relative;
    z-index: 1;
}
.navbar>.container-fluid a{
    padding: 10px;
}
.head > .nav-menu  a {
    
    color: #ffffff;
    display: block;
    font-size: 15px;
    font-weight: bolder;
    text-transform: uppercase;
    letter-spacing: 4px;
    font-family: "Oswald", sans-serif;
    padding: 10px 0px;
    position: relative;
    -webkit-transition: all 0.3s;
    -o-transition: all 0.3s;
    transition: all 0.3s;
}
.head > .nav-menu  a:hover{
    color: #f36100;
    letter-spacing: 6px;
    
    
}
.carousel-inner > .carousel-item > .carousel-caption h5 {
    padding: 20px;
    letter-spacing: 3px;
    color: #f36100;
    background-color: black;
    font-size: 2.75;
    font-weight: bolder;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: row;
    
}
i{
    color: white;
    font-size: 2em;
}

h2, h3, h4, h5, h6 {
    margin: 0;
    color: #111111;
    font-weight: 400;
    font-family: 'Oswald', sans-serif;

}
.carousel-inner > .carousel-item > .carousel-caption > .top-option a i{
    padding: 20px;
    font-size: 4em;
    font-weight: bold;
    gap: 5px;
    transition: 0.3s;
}
.carousel-inner > .carousel-item > .carousel-caption > .top-option a i:hover{
   color: #f36100;
}
.footer-section {
    background: rgb(0, 0, 0);
    padding-top: 50px;
    color: whitesmoke;
}
.h4 , h4{
    font-size: calc(1.275rem + .3vw);
    line-height: 1.2;
    padding-bottom: 5px;
    
    
}
.fa-logo {
    padding: 15px;
}
h4{
    color: #f36100;

}
a{
    padding: 10px;
}
.row > .col-lg-12{
  padding: 20px;
  margin-top: 20px;
}
.gt-text{
    display: flex;
    flex-direction: row;
    gap: 5px;
}
.gt-text i{
    color: #f36100;
}
.navbar > .container-fluid > .collapse > .nav-bar li a{
    transition: 0.3s;
}
.navbar > .container-fluid > .collapse > .nav-bar li:hover{
    color: #f36100;
}
.about-video {
    height: 640px;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
}
.set-bg {
    background-repeat: no-repeat;
    background-size: cover;
    background-position: top center;
}
.about-text {
    background: #000000;
    height: 640px;
    padding: 120px 70px 0 70px;
    color: whitesmoke;
}
.about-video .play-btn {
    display: inline-block;
    height: 70px;
    width: 70px;
    background: #f36100;
    border-radius: 50%;
    line-height: 70px;
    text-align: center;
    font-size: 36px;
    color: #ffffff;
}
.banner-section {
    padding: 10px;
    height: 550px;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
}
.set-bg {
    background-repeat: no-repeat;
    background-size: cover;
    background-position: top center;
}
.bs-text h2 {
    font-size: 48px;
    color: #ffffff;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 25px;
}
.bs-text .bt-tips {
    font-size: 20px;
    color: #c4c4c4;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 45px;
}
.bs-text .primary-btn {
    background: transparent;
    border: 2px solid #f36100;
}
.primary-btn.btn-normal {
    -webkit-transition: all 0.3s;
    -o-transition: all 0.3s;
    transition: all 0.3s;
}
.primary-btn {
    display: inline-block;
    font-size: 14px;
    padding: 17px 30px 16px;
    color: #ffffff;
    background: #f36100;
    line-height: normal;
    letter-spacing: 1px;
    text-transform: uppercase;
    font-weight: 700;
}
.aboutus-section{
    padding: 80px;
    background: black;
}
.body{
    background: black;
}
.class-details-text .cd-pic img {
    min-width: 100%;
}

img {
    max-width: 100%;
}

img {
    vertical-align: middle;
    border-style: none;
}
.sidebar-option {
    padding-left: 40px;
}
<style>
*, ::after, ::before {
    box-sizing: border-box;
}
user agent stylesheet
div {
    display: block;
}
.sidebar-option .so-banner {
    height: 300px;
    position: relative;
}
<style>
.set-bg {
    background-repeat: no-repeat;
    background-size: cover;
    background-position: top center;
}
element.style {
    background-image: url(img3.jpeg);
}
.sidebar-option {
    padding-left: 40px;
}
.sidebar-option .so-categories {
    margin-bottom: 40px;
}
.sidebar-option .so-categories .title {
    font-size: 20px;
    color: #ffffff;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 24px;
}
h1, h2, h3, h4, h5, h6 {
    margin: 0;
    color: #111111;
    font-weight: 400;
    font-family: "Oswald", sans-serif;
}
ul {
    display: block;
    list-style-type: disc;
    margin-block-start: 1em;
    margin-block-end: 1em;
    margin-inline-start: 0px;
    margin-inline-end: 0px;
    padding-inline-start: 40px;
}
li {
    display: list-item;
    text-align: -webkit-match-parent;
}
.set-bg {
    background-repeat: no-repeat;
    background-size: cover;
    background-position: top center;
}
.sidebar-option .so-latest .latest-item {
    overflow: hidden;
    margin-bottom: 30px;
}
.col-md-6{
    position: relative;
    width: 100%;
    padding-right: 15px;
    padding-left: 15px;
}


<style>
*, ::after, ::before {
    box-sizing: border-box;
}
user agent stylesheet
div {
    display: block;
}
<style>
html, body {
    height: 100%;
    font-family: "Muli", sans-serif;
    -webkit-font-smoothing: antialiased;
    font-smoothing: antialiased;
}
body {
    font-family: Arial;
}
<style>
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;
}
<style>
:root {
    --blue: #007bff;
    --indigo: #6610f2;
    --purple: #6f42c1;
    --pink: #e83e8c;
    --red: #dc3545;
    --orange: #fd7e14;
    --yellow: #ffc107;
    --green: #28a745;
    --teal: #20c997;
    --cyan: #17a2b8;
    --white: #fff;
    --gray: #6c757d;
    --gray-dark: #343a40;
    --primary: #007bff;
    --secondary: #6c757d;
    --success: #28a745;
    --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;
}
.class-details-text .cd-trainer .cd-trainer-text .trainer-title {
    margin-bottom: 18px;
}
.class-details-text .cd-trainer .cd-trainer-text p {
    color: #c4c4c4;
}
p {
    font-size: 14px;
    font-family: "Muli", sans-serif;
    color: #a9a9a9;
    font-weight: 400;
    line-height: 24px;
    margin: 0 0 15px 0;
}
.class-details-section {
    background: #151515;
    padding-bottom: 60px;
}
.spad {
    padding-top: 100px;
    padding-bottom: 100px;
}
*, ::after, ::before {
    box-sizing: border-box;
}
.sidebar-option .so-categories {
    margin-bottom: 40px;
}
.class-details-text .cd-trainer .cd-trainer-text {
    position: relative;
}
*, ::after, ::before {
    box-sizing: border-box;
}
div {
    display: block;
}
.row {
    display: -ms-flexbox;
    display: flex;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    margin-right: -15px;
    margin-left: -15px;
}
.class-details-text .cd-text .cd-single-item h3 {
    color: #ffffff;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 28px;
}
.class-details-text .cd-pic {
    margin-bottom: 45px;
}
.sidebar-option .so-latest .latest-item {
    overflow: hidden;
    margin-bottom: 30px;
}
.sidebar-option .so-latest .latest-item .li-pic {
    float: left;
    margin-right: 20px;
}
.sidebar-option .so-latest .latest-item .li-text {
    overflow: hidden;
}
h6 {
    font-size: 16px;
}
.sidebar-option .so-latest .latest-item .li-text h6 a {
    font-size: 15px;
    color: #ffffff;
    line-height: 21px;
}

.sidebar-option .so-latest .latest-item .li-text .li-time {
    display: inline-block;
    font-size: 12px;
    color: #888888;
}
.sidebar-option .so-latest .title {
    font-size: 20px;
    color: #ffffff;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 40px;
}
.sidebar-option .so-latest .latest-large .ll-text {

    left: 0;
    bottom: 18px;
    width: 100%;
    padding: 0 25px;
}
.sidebar-option .so-latest .latest-large .ll-text h5 a {
    color: #ffffff;
    font-weight: 600;
    line-height: 23px;
}
h5 {
    font-size: 18px;
}
.set-bg {
    background-repeat: no-repeat;
    background-size: cover;
    background-position: top center;
}
.sidebar-option .so-latest .latest-item .li-pic {
    float: left;
    margin-right: 20px;
}
.cd-trainer > .row > .cd-md-6{
    position: relative;
    width: 100%;
    padding-right: 15px;
    padding-left: 15px;
}
@media (max-width: 480px) {
    body {
        background-image: url(images/background-mobile.jpg);
    }
}