.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
}

.modal-content {
    background: white;
    width: 60%;
    max-width: 600px;
    margin: 10% auto;
    padding: 20px;
    border-radius: 10px;
}

.close {
    float: right;
    font-size: 30px;
    cursor: pointer;
}