hover effect style : demo 7

HTML

                        

CSS

                        .box{
                            position: relative;
                            text-align: center;
                            overflow: hidden;
                        }
                        .box img{
                            width: 100%;
                            height: auto;
                        }
                        .box .option{
                            position: absolute;
                            top: 0;
                            left: 0;
                            width: 100%;
                            height: 100%;
                            transition: all 0.5s ease 0s;
                        }
                        .box:hover .option{
                            background: rgba(0, 0, 0 ,0.8);
                        }
                        .box .link{
                            border: 4px solid #fff;
                            position: relative;
                            top: 0;
                            width: 100%;
                            height: 100%;
                            line-height: 40px;
                            font-size: 18px;
                            display: inline-block;
                            color: #fff;
                            transition: all 0.5s ease 0s;
                            opacity: 0;
                        }
                        .box .link:hover{
                            color:#fff;
                        }
                        .box:hover .link{
                            top: 40%;
                            border-radius: 50%;
                            width: 50px;
                            height: 50px;
                            opacity: 1;
                        }
                        @media only screen and (max-width: 990px){
                            .box{
                                margin-bottom: 20px;
                            }
                        }
                    
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