html - How can i make an Image as large as possible in a Mdl-Card-Lightbox? -


i creating lightbox material design lite card design without javascript. each image should displayed large possible in lightbox-card. have every kind of pictures, landscape, portrait, banners, ... card should adapt size of image. however, nothing should cut off picture!

here's html code: 

 <a href="#" class="lightbox" id="img1">   div class="demo-card-image mdl-card mdl-shadow--2dp">     <div class="mdl-card__title mdl-card--expand"></div>     <div class="mdl-card__actions">       <span class="demo-card-image__filename">example title</span>     </div>   </div> </a>

the card should not larger 90% in width , 80% in height.

scss code:

.demo-card-image.mdl-card {   max-width: 90%;   max-height: 80%;   top: 50%;   left: 50%;   transform: translate(-50%, -50%);   background: url('http://placehold.it/500x300')no-repeat center center; }  .demo-card-image > .mdl-card__actions {   height: 52px;   padding: 16px;   background: rgba(0, 0, 0, 0.2); }


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