p:first-of-type{
position: relative;
overflow: hidden;
width: 100%;
padding-top: 56.25%;
margin-bottom: 0px;
}
.single.single-post .page-content > p iframe{
position: absolute;
top: 0;
left: 0;
bottom: 0;
right: 0;
width: 100%;
height: 100%;
}
]]>