.white_content {
        display: none;
        position: absolute;
        top: 0.5em;
        left: 17em;
        width: 41em;
        height: 42em;
        padding: 5px;
        border: 4px solid #4CAF50;
        border-radius: 10px;
        background-color: white;
        z-index:1002;
    }