.smw-modal-window {
    position: fixed;
    background-color: rgba(255, 255, 255, 0.25);
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 999;
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    -webkit-transition: all 0.3s;
    transition: all 0.3s;
}

.smw-modal-window:target {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
}

.smw-modal-window>div {
    width: 400px;
    position: absolute;
    top: 50%;
    left: 50%;
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    padding: 2em;
    background: #ffffff;
}

.smw-modal-window header {
    font-weight: bold;
}

.smw-modal-window h1 {
    font-size: 150%;
    margin: 0 0 15px;
}

.smw-modal-close {
    color: #aaa;
    line-height: 50px;
    font-size: 80%;
    position: absolute;
    right: 0;
    text-align: center;
    top: 0;
    width: 70px;
    text-decoration: none;
}

.smw-modal-close:hover {
    color: black;
}