#JanelaModal {

    display: none;
    position:fixed;
    z-index: 1;
    padding-top: 100px;
    left: 0px;
    top: 0px;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.8);
    overflow: auto;
}

#imgModal {

     margin: auto;
     display: block;
     width: 100%;
     max-width: 800px;
}

#btFechar {
    position: absolute;
    top: 15px;
    left: 35px;
    color: blanchedalmond;
    font-size: 40;
    font-weight: bold;
    cursor: pointer;
}