#popup {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
#popup-body {
    width: 300px;
    height: 100px;
    text-align: center;
    padding: 15px;
    border: 3px solid white;
	color: white;
    border-radius: 10px;
    background-color: #000;
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    margin: auto;
}
#popup:target {display: block;}