#loading{
position:fixed;
top:0;
left:0;
width:100%;
height:100%;
background:rgba(0,0,0,0.8);
display:none;
justify-content:center;
align-items:center;
flex-direction:column;
color:white;
font-size:18px;
z-index:9999;
}

.spinner{
width:60px;
height:60px;
border:6px solid #ccc;
border-top:6px solid #25D366;
border-radius:50%;
animation:spin 1s linear infinite;
margin-bottom:15px;
}

@keyframes spin{
0%{transform:rotate(0deg);}
100%{transform:rotate(360deg);}
}