/* Styling for popup */
        .popup {
            display: none;
            position: fixed;
            z-index: 1;
            left: 35%;
            top: 0;
            width: 525px;
            height: 100%;
            overflow: auto;
            background-color: rgba(0,0,0,0.5);
        }

        .popup-content {
            background-color: #fefefe;
            margin: 10% auto;
            padding: 10px;
            border: 1px solid #888;
            width: 80%;
            height: 100%;
        }

        .close {
            color: #aaa;
            float: right;
            font-size: 28px;
            font-weight: bold;
        }

        .close:hover,
        .close:focus {
            color: black;
            text-decoration: none;
            cursor: pointer;
        }