.old-files{
    display: none;
    position: absolute;
    min-width: 600px;
    z-index: 3;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    padding: 20px 45px;
    background-color: #fff;
    border-radius: 5px;
}

.back-form {
    display: none;
    top: 0;
    left: 0;
    position: fixed;
    z-index: 2;
    width: 100vw;
    height: 100vh;
    background: #00000072;
}

.update-file{
    display: none;
    position: absolute;
    min-width: 600px;
    z-index: 3;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    padding: 20px 45px;
    background-color: #fff;
    border-radius: 5px;
}

.comment-window{
    display: none;
    position: absolute;
    min-width: 600px;
    z-index: 3;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    padding: 20px 45px;
    background-color: #fff;
    border-radius: 5px;
}