1. U Bloggeru, idite do "Theme" > "Edit HTML".
2. Zaljepite kod prije </style>:
/* lightbox image, etc */
.CSS_LIGHTBOX {z-index:99999999!important;}
.CSS_LIGHTBOX_BG_MASK_TRANSPARENT {opacity:.95!important;}
.CSS_LIGHTBOX_SCALED_IMAGE_IMG {width:auto!important;max-width:100%;box-shadow:0 0 10px rgba(0,0,0,0.1);}
.CSS_LIGHTBOX_BTN_CLOSE {background: url('https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5IQ_x2lYQhktd1V9MU1tTI_-rI6oI6A5_gm8kaJzG3_h2YYkYoTVQyEDX6ZOve-n3GkcLHaWW3_WyCAqvv0pz2-4PkncLMsFSKycMa0FvN26eu8gvkiQtCZOxRlwudPOVquox451c/s1600/delete.png') no-repeat!important;width:32px!important;height:32px!important;top:30px!important;opacity:0.7;transition:all .3s;}
.CSS_LIGHTBOX_BTN_CLOSE:hover{opacity:1;}
.CSS_LIGHTBOX_BTN_CLOSE_POS {right:10px!important;}
.CSS_LIGHTBOX_BG_MASK{background-color:rgba(0,0,0,0.8)!important}
.CSS_LIGHTBOX_FILMSTRIP{background-color:rgba(0,0,0,0.5)!important}