#textDiv{
    width: 40%;
    height: 50vh;
    overflow-y: auto;
    text-align: center;
    font-size: 1.5vw;
    padding: 10px;
    color: black;
    border: 1px solid black;
    margin-left: 30%;
    visibility: hidden;
    overflow-x: hidden;
    margin-top: 5vh;
}
#fileId,#viewfile{
    margin-top: 1.5vh;
     margin-left: 30%; 
     font-size: 2vw;
}