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

.hljs {
    white-space: pre-wrap;
}