/* https://github.com/ireade/accessible-modal-dialog */

.dialog-overlay {
    z-index: 2;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.7);
}

.dialog {
    z-index: 3;
    background-color: #fff;
    padding: 20px;
    text-align: left;
    width: 90%;
    max-width: 400px;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
}

.dialog-overlay[aria-hidden="true"],
.dialog[aria-hidden="true"] {
    display: none;
}

.dialog-overlay:not([aria-hidden="true"]),
.dialog:not([aria-hidden="true"]) {
    display: block;
}

.sr-only {
    opacity: 0;
    position: absolute;
    clip: rect(1px 1px 1px 1px);
    clip: rect(1px, 1px, 1px, 1px);
}