#drop-area {
    border: 2px dashed #ccc;
    border-radius: 20px;
    width: 300px;
    height: 200px;
    padding: 10px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
#fileElem {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}
#progress-bar {
    width: 0%;
    height: 20px;
    background-color: green;
    text-align: center;
    color: white;
}
.upload-over-ray {
    position: relative;
    display: inline-block;
}
.upload-close-button {
    position: absolute;
    top: 0;
    right: 0;
    cursor: pointer;
    padding: 1px 5px;
    background-color: white;
    border: none;
    border-radius: 50%;
}