.modal-backdrop{
    z-index:-1;
}
.btn{
    border-radius: 0;
    padding: 0;
    width: 80%;
    height: auto;
    margin-bottom: 5%;
}
.modal{
    z-index: 99 !important; 
}
.modal-content{
    z-index: 99 !important; 
}