.container-fluid{
    border:80px soild black;
    height: 5px;
    text-decoration :none;
    position: relative;
}
#navbar{
    background-color: white;
    justify-content: space-around;
    display :flex;
    padding: 20px;
    color-interpolation-filters: auto;
    
    
}
#nav a{
    margin: 0px 15px;
    text-decoration: none;
}
@import url('https://fonts.googleapis.com/css2?family=Open+Sans:ital@1&display=swap');
#para{
    font-family: 'Open Sans', sans-serif;
    font-size: 70px;
}

.text-container{
    position: absolute;
    text-align: center;
    color: white;
    background-image: url(https://www.theyoganomads.com/wp-content/uploads/2022/10/5-elements-of-yoga.jpg);
    background-size: cover;
    width: 1500px;
    height: 750px;
    padding:200px;
}
#btn-style{
    position: absolute;
    background-color: rgba(0, 0, 255, 0.377);
    text-align: center;
    color:rgba(0, 0, 255, 0.431);
}
@import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@500&display=swap');
.container1{
    border: 3px solid  gray;
    height: 900px;
    width:1200px;
    padding: 300px;
    margin-top: 900px;
    background-image: url('https://www.vivafifty.com/wp-content/uploads/2020/01/Gifts-for-women-turning-40-yoga-retreat.jpg');
    background-size: cover;
    text-align: center;
    color: white;
    font-size: 30px;
    border-radius: 30px;
}
body{
    background-color: white;
}
.thumbnail{
    width: 450px;
    height: 400px;
    border-radius: 60px;
}
table{
    margin: 0px auto;
}
td{
    padding-bottom: 100px;
    padding-left: 130px;
    padding-right: 150px;
}
.test-container{
    border: 2px soild black;
    position: absolute;
    color: black;
    background-image: url('https://mobirise.com/extensions/retreatm5/outdoor-yoga-classes/assets/images/pexels-andrea-piacquadio-3779750.jpeg');
    background-size: cover;
    width: auto;
    height: 450px;
    padding: 100px;
    margin: 0px auto;
    justify-content: space-around;
}
#header{
    text-align: center;
    color: black;
}
.viedo-container{
    position: absolute;
    width: 1500px;
    background-image: url('https://mobirise.com/extensions/retreatm5/outdoor-yoga-classes/assets/images/pexels-chermiti-mohamed-3049225.jpg');
    background-size: cover;
    height:800px ;
    justify-content: space-around;
    
}
#head{
    text-align: center;
    color:black;
}
.thumbnail1{
    width: 400px;
    height: 350px;
    justify-content: space-around;
    border-radius: 20px;
}
.img{
    padding-bottom: 80px;
    padding-left: 40px;
    padding-right: 20px;
}
.btn btn-primary{
    text-align: center;
    width: 50px;
    font-family: 'Open Sans', sans-serif;
}
.img-thumbnail{
    border: 3px soild black;
    position: absolute;
    color: black;
    background-image: url('https://mobirise.com/extensions/retreatm5/outdoor-yoga-classes/assets/images/pexels-lucas-pezeta-2985098.jpg');
    background-size: cover;
    width: 1500px;
    height: 450px;
    padding: 10px;
    margin: 0px auto;
    justify-content: space-around;

}
.box{
    border: 2px solid black;
    margin: 100px;
    padding: 50px;
    border-color: blue;
    box-sizing: 30px;
    background-color:  rgba(128, 128, 128, 0.799);
    border-radius: 30px;
}
#mail{
    border: 2px soild black;
    background-color: black;
    color: white;
    padding: 70px;
    margin: 10px;
    width: 1500px;
}
task.css
Displaying task.css.