.modal {
    display: none;
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background-color: #3bb08f;
    /*background-color: #fefefe;*/
    margin: 10% auto;
    padding: 20px;
    border: 1px solid #888;
    max-width: 400px;
    border-radius: 10px;
    text-align: center;
}

.modal-content ul {
    padding: 0;
    text-align: center;
}

.modal-content ul li {
    list-style: none;
}

.close {
    color: #ffffff;
    /*color: #aaa;*/
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close:hover,
.close:focus {
    color: #000;
    text-decoration: none;
    cursor: pointer;
}