.modal {
display: none;
position: fixed;
z-index: 199999;;
padding-top: 100px;
left: 0;
top: 0;
width: 100%;
height: 100%;
overflow: auto;
background-color: rgb(0,0,0);
background-color: rgba(0,0,0,0.8);
}
.modal-content {
background-color: #fefefe;
margin: auto;
padding: 10px;
border: 1px solid #888;
width: 70%;
}
.close {
color: #ffffff;
float: right;
margin-right:20px;
font-size: 40px;
font-weight: bold;
}
.close:hover,
.close:focus {
color: #ffffff;
text-decoration: none;
cursor: pointer;
}
.content-iframe{
padding-bottom:56.25%; 
position:relative; 
display:block; 
width: 100%
}
.responsive-iframe {
position:absolute; top:0; left: 0;
}
@media screen and ( max-width: 550px) {
.modal-content {
background-color: #fefefe;
margin: auto;
padding: 10px;
border: 1px solid #888;
width: 100%;
}
.modal-content{
margin-top:30px; 
}
}