body{
            padding: 0;
            margin: 0;
        }
        img{
            border: 0;
        }
        .main-content{
            width:100%;
            display: inline-block;
            background: gray;
            text-align: center;
        }
        .main-content img {
            margin: 0;
            padding: 0;
            max-width:100%;
        }