.loading_overlay{
    background-color: #f3f3f3;
    height:100vh;
    width:100%;
    position:fixed;
    z-index:100;
    opacity: 0.7;
}
/* .preloader{
    border: 16px solid #f3f3f3;
    border-top: 16px solid #666666;
    border-radius: 50%;
    margin: 250px auto;
    position:fixed;
    left:47%;
    top:10%;
    width: 120px;
    height: 120px;
    animation: spin 2s linear infinite;
} */
.loading-bird{
    margin: 0 auto;
    width: 120px;
    height: 120px;
    position:fixed;
    left:47%;
    top:50%;
}