.mainwrapper {
            background: #fefefe;
            display: flex;
            width: 100%;
            height: 650px;
            justify-content: center;
            align-items: center;
        }

        img.imgthumb {
            width: 150px;
            border-radius: 10px;
        }

        /* overlay by webprogramminunpas and modified by nelayankode.com*/
        .overlay {
            width: 0;
            height: 0;
            overflow: hidden;
            position: fixed;
            top: 0;
            left: 0;
            background: rgba(0, 0, 0, 0);
            z-index: 9999;
            transition: .8s;
            text-align: center;
            padding: 100px 0;
        }

        .overlay:target {
            width: auto;
            height: auto;
            bottom: 0;
            right: 0;
            background: rgba(0, 0, 0, .7);
        }

        .overlay img {
            max-height: 100%;
            box-shadow: 2px 2px 7px rgba(0, 0, 0, .5);
        }

        .overlay:target img {
            animation: zoomDanFade 1s;
        }

        .overlay .close {
            position: absolute;
            top: 2%;
            left: 2%;
            margin-left: -20px;
            color: white;
            text-decoration: none;
            line-height: 14px;
            padding: 5px;
            opacity: 0;
        }

        .overlay:target .close {
            animation: slideDownFade .5s .5s forwards;
        }

        /* animasi */
        @keyframes zoomDanFade {
            0% {
                transform: scale(0);
                opacity: 0;
            }

            100% {
                transform: scale(1);
                opacity: 1;
            }
        }

        @keyframes slideDownFade {
            0% {
                opacity: 0;
                margin-top: -20px;
            }

            100% {
                opacity: 1;
                margin-top: 0;
            }
        }
</style>