.test-series-login-popup-overlay {
    position: fixed;
    top:0;left:0;right:0;bottom:0;
    display:none;
    justify-content:center;
    align-items:center;
    background:rgba(0,0,0,0.7);
    z-index:9999;
}
.login-popup {
    background:#fff;
    padding:25px;
    width:400px;
    max-width:90%;
    border-radius:10px;
    position:relative;
}
.close-popup {
    position:absolute;
    top:10px;
    right:10px;
    cursor:pointer;
    font-weight:bold;
    font-size:22px;
}