.overlay {
    visibility: hidden;
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, .7);
}

.overlay:target {
    visibility: visible;
}

.modal {
    position: relative;
    width: 600px;
    max-width: 80%;
    background: white;
    border-radius: 8px;
    padding: 1em 2em;
}

.modal .close {
    position: absolute;
    top: 15px;
    right: 15px;
    color: grey;
    text-decoration: none;
}

.overlay .cancel {
    position: absolute;
    width: 100%;
    height: 100%;
}