#topBtn{
position:fixed;
bottom:30px;
right:30px;
width:45px;
height:45px;
border-radius:50%;
background:rgba(255,215,0,0.25);
backdrop-filter: blur(6px);
display:flex;
align-items:center;
justify-content:center;
font-size:20px;
cursor:pointer;
opacity:0;
transition: all 0.3s ease;
}
#topBtn:hover{
background:rgba(255,215,0,0.6);
transform:scale(1.1);
}