body {
  width: 100%;
  height: 300px;
}
.Modal {
    position: fixed;
    display: none;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 0;
    background: rgba(0,0,0,0.7);
    pointer-events: none;
}
.Modal:target {
    display: flex;
    pointer-events: auto;
} 
.Modal_Body {
    position: relative;
    z-index: 2;
    display: block;
    margin: auto;
    padding: 15px;
    background: #FFF;
}