.overlay
    {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.7);
    transition: opacity 500ms;
    visibility: hidden;
    opacity: 0;
    z-index: 9999;
    }

.overlay:target
    {
    visibility: visible;
    opacity: 1;
    }

.popup 
    {
    top: 150px;
    margin: 70px auto;
    padding: 20px;
    background: rgba(255, 255, 255, 0.85);
    border-radius: 5px;
    width: 30%;
    position: relative;
    transition: all 5s ease-in-out;
    z-index: 9999;
    }

.popup h2
    {
    margin-top: 0;
    color: #333;
    font-family: Tahoma, Arial, sans-serif;
    }
.popup span, .popup a
    {
    font-family: 'Raleway', sans-serif;
    text-decoration: none;
    }
.popup a
    {
    color: #6a6a00;
    }
.popup .close
    {
    position: absolute;
    top: 15px;
    right: 30px;
    transition: all 200ms;
    font-size: 30px;
    font-weight: bold;
    text-decoration: none;
    color: #333;
    }
.popup .close:hover
    {
    color: yellow;
    }
.popup .content
    {
    max-height: 30%;
    overflow: auto;
    }