.modal {
    /* Hidden by default */
    display: none;
    position: fixed;
    z-index: 100;
    left: 0;
    top: 0;
    margin: auto;
    width: 100%;
    height: 100%;
    overflow: auto;
    font-size: 16px;
    background-color: rgba(0,0,0,0.25);
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: #fefefe;
    padding: 20px;
    border: 1px solid #888;
    width: 100%;
    max-width: 500px;
}

p.modal-title {
    font-size: 1.4em;
    font-weight: 600;
    margin-bottom: 20px;
}