table .cover-color img {
    width: 200px;
    height: 100px;
}

body {
margin :0px;
padding: 0px;
}

#contents {
padding: 5px;
}

h1 {
}

h2 {
    text-align: center;
}

h3 {
    text-align: center;
}

@media screen and (max-width:768px) {
    table {
        width: 80%;
    }
    table .cover-color img {
        width :70%;
    }
}