Как сделать, чтобы видео полностью влезало?

$(document).ready(function() {
 
 $('.details__item--video').on('click', function(e) {
   var video = $(this).attr('data-video');
   $('.inner__video').append($('<iframe>', {
     src: video,
     on: {
       load: function() {
         $('.overlay--video').addClass('overlay--active');
       }
     }
   }))
   e.preventDefault();

 });

   $('.overlay__close').click(function() {
      var overlay = $(this).parents('.overlay');
      overlay.removeClass('overlay--active');
      $('.inner__video iframe').remove();
    });

    $('.overlay--video').on('click', function(e) {
      if( !$(e.target).is('.inner__video, .overlay--close') ) {
        $('.overlay--video').removeClass('overlay--active');
        $('.inner__video iframe').remove();
     }
  })
});

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    opacity: 0;
    visibility: hidden;
    z-index: 20;
    transition: 0.3s opacity, 0.3s visibility;
}

.overlay--active {
    opacity: 1;
    visibility: visible;
}

.overlay__close {
    position: absolute;
    top: 40px;
    right: 25px;
    width: 30px;
    height: 30px;
    cursor: pointer;
    z-index: 1;
}

.overlay__close:after,
.overlay__close:before {
    content: '';
    position: absolute;
    top: 11px;
    left: 3px;
    width: 25px;
    height: 3px;
    background-color: #fff;
}

.overlay__close:after {
    transform: rotate(45deg);
}

.overlay__close:before {
    transform: rotate(-45deg);
}

.inner__overlay {
    display: flex;
    align-items: center;
    height: 100%;
    margin: 0 auto;
    max-width: 1200px;
    position: relative;
    margin: 0 auto;
}

.inner__video {
    position: relative;
    width: 100%;
    padding-top: 45%;
}

.inner__video iframe {
    display: block;
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0px;
    left: 0px;
}

.inner__data {
    max-height: 95vh;
    position: relative;
    width: 100%;
    margin: 0 auto;
    padding: 0px 180px;
}

@media screen and (max-width: 1199px) {

.overlay__close {
    right: 10px;
}

}

@media screen and (max-width: 960px) {

.inner__data {
    padding: 0 40px;
}

}

body {
  margin: 0;
  padding: 0;
}

*{
  box-sizing: border-box;
}

<div class="details__wrap">
   <a href="" class="details__item details__item--video" data-video="https://www.youtube.com/embed/d7l3-MGSY2k"><span>title 1</span></a>
 </div>
 <div class="details__wrap">
   <a href="" class="details__item details__item--video" data-video="https://www.youtube.com/embed/d7l3-MGSY2k"><span>title 2</span></a>
 </div>

<div class="overlay overlay--video">
  <div class="inner__overlay">
    <div class="overlay__close"></div>
     <div class="inner__data">
      <div class="inner__video">
    </div>
  </div>
</div>

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>