style.css

 @import url('https://fonts.googleapis.com/css2?family=Poppins:wght@500;600&display=swap');
*{
    margin: 0%;
    padding: 0%;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

html, body{
    width: 100%;
    height: 100%;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1.5rem 8%;
    background: rgba(0, 0, 0, .1);
    backdrop-filter: blur(50px);
    /* display: flex; */
    justify-content: space-between;
    align-items: center;
    z-index: 100;
}

.header.sticky {
    border-bottom: .1rem solid rgba(0, 0, 0, .2);
}

.logo {
    font-size: 2.5rem;
    color: #670b0b;
    font-weight: 800;
    cursor: default;
}

#main{
    padding: 50px 0px 0px 0px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    background-color: #f7cac9;
}

#panel{
    overflow: hidden;
    /* position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%); */
    border-radius: 10px;
    width: 80%;
    height: 80%;
    background-color: #fbfbfb;

}

#paneltop{
    padding: 0% 28%;
    color: #fff;
    align-items: center;
    justify-content: space-between;
    display: flex;
    width: 100%;
    height: 90px;
    background-color: #c94c4c;
}

.element{
    align-items: center;
    padding: 10px;
    display: flex;
    gap: 10px;
}

.h3{
    background-color: #fff;
}

.box{
    font-size: 17.5px;
    font-weight: 600;
    padding: 10px 17px;
    color: #a33636;
    background-color: #fff;
    border-radius: 5px;

}

#panelbtm{
    display: flex; /*bubbles agal bagal aa sake*/
    flex-wrap: wrap; /*bubble neeche bhi jaa sake*/
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 15px;
    width: 100%;
    height: calc(100% - 100px);
    background-color: #fff;
}

.bubble{
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    width: 55px;
    height: 55px;
    border-radius: 50%;
    background-color: #c94c4c;
    font-weight: 600;
    font-size: 19px;
    transition: .3s ease;
}

.bubble:hover{
    cursor: pointer;
    background-color: #a33636;
    box-shadow: 0 0 1rem rgb(255, 21, 64);
}