/* Popup Open button */ 
.open-button{
    color:rgb(240, 232, 232);
    background:#0066CC;
    padding:10px;
    text-decoration:none;
    border:1px solid #0157ad;
    border-radius:3px;
}
 
.open-button:hover{
    background:#01478e;
}
 
.popup {
    position:fixed;
    top:0px;
    left:0px;
    background:rgba(0,0,0,0.75);
    width:100%;
    height:100%;
    display:none;
}
 
/* Popup inner div */
.popup-content {
    width: 700px;
    margin: 0 auto;
    box-sizing: border-box;
    padding: 40px;
    margin-top: 100px;
    box-shadow: 0px 2px 6px rgba(0,0,0,1);
    border-radius: 3px;
    background: #fff;
    position: relative;
}
 
/* Popup close button */
.close-button {
    width: 25px;
    height: 25px;
    position: absolute;
    top: -10px;
    right: -10px;
    border-radius: 20px;
    background: rgba(0,0,0,0.8);
    font-size: 20px;
    text-align: center;
    color: #fff;
    text-decoration:none;
}
 
.close-button:hover {
    background: rgba(0,0,0,1);
}
 
@media screen and (max-width: 720px) {
.popup-content {
    width:90%;
    } 
}