灯箱图像查看器在CCS中定位

我想在我的网站上稍微放下打开的图像，因为菜单覆盖了5％的打开图片 .
My website

HTML：

<div class="row">
<div class="col-margin col-sm-12">
    <div class="content-gallery">
        <div class="gallery-control left"></div>
        <div class="gallery-control right"></div>

        <div class="gallery-img-wrap">
            <a                           href="http://phuket.hu/static/img/content/hc4/szalloda_phuketen3.jpg"         class="gallery-img" style="background-image: url('http://phuket.hu/static/img/content/hc4/szalloda_phuketen3_s.jpg')" data-lightbox="gallery"></a>
            <a href="http://phuket.hu/static/img/content/hc4/szalloda_phuketen2.jpg" class="gallery-img" style="background-image: url('http://phuket.hu/static/img/content/hc4/szalloda_phuketen2_s.jpg')" data-lightbox="gallery"></a>
            <a href="http://phuket.hu/static/img/content/hc4/szalloda_phuketen5.jpg" class="gallery-img" style="background-image: url('http://phuket.hu/static/img/content/hc4/szalloda_phuketen5_s.jpg')" data-lightbox="gallery"></a>
            <a href="http://phuket.hu/static/img/content/hc4/szalloda_phuketen6.jpg" class="gallery-img" style="background-image: url('http://phuket.hu/static/img/content/hc4/szalloda_phuketen6_s.jpg')" data-lightbox="gallery"></a>
            <a href="http://phuket.hu/static/img/content/hc4/szalloda_phuketen7.jpg" class="gallery-img" style="background-image: url('http://phuket.hu/static/img/content/hc4/szalloda_phuketen7_s.jpg')" data-lightbox="gallery"></a>
            <a href="http://phuket.hu/static/img/content/hc4/szalloda_phuketen8.jpg" class="gallery-img" style="background-image: url('http://phuket.hu/static/img/content/hc4/szalloda_phuketen8_s.jpg')" data-lightbox="gallery"></a>
            <a href="http://phuket.hu/static/img/content/hc4/szalloda_phuketen9.jpg" class="gallery-img" style="background-image: url('http://phuket.hu/static/img/content/hc4/szalloda_phuketen9_s.jpg')" data-lightbox="gallery"></a>
            <a href="http://phuket.hu/static/img/content/hc4/szalloda_phuketen10.jpg" class="gallery-img" style="background-image: url('http://phuket.hu/static/img/content/hc4/szalloda_phuketen10_s.jpg')" data-lightbox="gallery"></a>
            <a href="http://phuket.hu/static/img/content/hc4/szalloda_phuketen11.jpg" class="gallery-img" style="background-image: url('http://phuket.hu/static/img/content/hc4/szalloda_phuketen11_s.jpg')" data-lightbox="gallery"></a>
        </div>
    </div>
</div>

CSS：

/* Preload images */
    body:after {
      content: url(../images/lightbox/close.png) url(../images/lightbox/loading.gif) url(../images/lightbox/prev.png) url(../images/lightbox/next.png);
      display: none;
    }

    .lightboxOverlay {
      position: absolute;
      top: 0;
      left: 0;
      z-index: 9999;
      background-color: black;
      filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=80);
      opacity: 0.8;
      display: none;
    }

    .lightbox {
      position: absolute;
      left: 0;
      width: 100%;
      z-index: 10000;
      text-align: center;
      line-height: 0;
      font-family: 'KeepCalm', sans-serif;
      font-weight: normal;
    }

    .lightbox .lb-image {
      display: block;
      height: auto;
      max-width: inherit;
      -webkit-border-radius: 3px;
      -moz-border-radius: 3px;
      -ms-border-radius: 3px;
      -o-border-radius: 3px;
      border-radius: 3px;
    }

    .lightbox a img {
      border: none;
    }

    .lb-outerContainer {
      position: relative;
      background-color: white;
      *zoom: 1;
      width: 250px;
      height: 250px;
      margin: 0 auto;
      -webkit-border-radius: 4px;
      -moz-border-radius: 4px;
      -ms-border-radius: 4px;
      -o-border-radius: 4px;
      border-radius: 4px;
    }

    .lb-outerContainer:after {
      content: "";
      display: table;
      clear: both;
    }

    .lb-container {
      padding: 4px;
    }

    .lb-loader {
      position: absolute;
      top: 43%;
      left: 0;
      height: 25%;
      width: 100%;
      text-align: center;
      line-height: 0;
    }

    .lb-cancel {
      display: block;
      width: 32px;
      height: 32px;
      margin: 0 auto;
      background: url(../images/lightbox/loading.gif) no-repeat;
    }

    .lb-nav {
      position: absolute;
      top: 0;
      left: 0;
      height: 100%;
      width: 100%;
      z-index: 10;
    }

    .lb-container > .nav {
      left: 0;
    }

    .lb-nav a {
      outline: none;
      background-image: url('data:image/gif;base64,R0lGODlhAQABAPAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==');
    }

    .lb-prev, .lb-next {
      height: 100%;
      cursor: pointer;
      display: block;
    }

    .lb-nav a.lb-prev {
      width: 34%;
      left: 0;
      float: left;
      background: url(../images/lightbox/prev.png) left 48% no-repeat;
      filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=0);
      opacity: 0;
      -webkit-transition: opacity 0.6s;
      -moz-transition: opacity 0.6s;
      -o-transition: opacity 0.6s;
      transition: opacity 0.6s;
    }

    .lb-nav a.lb-prev:hover {
      filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=100);
      opacity: 1;
    }

    .lb-nav a.lb-next {
      width: 64%;
      right: 0;
      float: right;
      background: url(../images/lightbox/next.png) right 48% no-repeat;
      filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=0);
      opacity: 0;
      -webkit-transition: opacity 0.6s;
      -moz-transition: opacity 0.6s;
      -o-transition: opacity 0.6s;
      transition: opacity 0.6s;
    }

    .lb-nav a.lb-next:hover {
      filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=100);
      opacity: 1;
    }

    .lb-dataContainer {
      margin: 0 auto;
      padding-top: 5px;
      *zoom: 1;
      width: 100%;
      -moz-border-radius-bottomleft: 4px;
      -webkit-border-bottom-left-radius: 4px;
      border-bottom-left-radius: 4px;
      -moz-border-radius-bottomright: 4px;
      -webkit-border-bottom-right-radius: 4px;
      border-bottom-right-radius: 4px;
    }

    .lb-dataContainer:after {
      content: "";
      display: table;
      clear: both;
    }

    .lb-data {
      padding: 0 4px;
      color: #ccc;
    }

    .lb-data .lb-details {
      width: 85%;
      float: left;
      text-align: left;
      line-height: 1.1em;
    }

    .lb-data .lb-caption {
      font-size: 13px;
      font-weight: bold;
      line-height: 1em;
    }

    .lb-data .lb-number {
      display: block;
      clear: left;
      padding-bottom: 1em;
      font-size: 12px;
      color: #999999;
    }

            .lb-data .lb-close {
              display: block;
              float: right;
              width: 30px;
              height: 30px;
              background: url(../images/lightbox/close.png) top right no-repeat;
              text-align: right;
              outline: none;
              filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=70);
              opacity: 0.7;
              -webkit-transition: opacity 0.2s;
              -moz-transition: opacity 0.2s;
              -o-transition: opacity 0.2s;
              transition: opacity 0.2s;
            }

            .lb-data .lb-close:hover {
              cursor: pointer;
              filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=100);
              opacity: 1;
            }