Не появляется кнопка закрвающая окно

.galery_img_pushkin{ 
    float:left; margin:100px 0 0 230px;   
} 
    .galery_img_pushkin a{ 
         display:block; cursor:zoom-in;   
    } 
        .galery_img_pushkin a:focus{ 
             position:fixed; top:0; right:0; bottom:0; left:0; height:170px; width:300px;margin:auto; border: 12px solid rgba(255,255,255,1.0); border-radius:10px; cursor:default; box-shadow: 0 0 20px rgba(30,30,30, 1.0), 0 0 0 1000px rgba(130,130,130,.5); z-index:2; 
        } 
            .close{ 
                display:none; background:rgba(172,205,0,1.00); height:55px; width:55px; position:absolute; top:70px; left:560px; z-index:3; text-align:center; font-size:40px; color:#fff; 
            } 
.galery_img_pushkin a:focus .close{ 
    display:block;  
} 
.close:hover{ 
    background:rgba(245,140,0,1.00); cursor:pointer; 
} 
                .pushkin_01{ 
                    background:rgba(100,130,130,.5); height:100px; width:200px 
                }

<div class="galery_img_pushkin"> 
  <div class="close">x</div> 
  <a href="#" class="pushkin_01"></a> 
</div>