.sustainability a{
    display: block;
    width: 100%;
    padding: 27px 0 25px;
    background: url(/jpn/ir/common/images/bg_nav_side_btn.jpg) no-repeat top center;
    background-size: cover;
    font-weight: bold;
    color: #ffffff;
    text-align: center;
    text-decoration: none;
}
@media print, screen and (min-width:768px){
    .sustainability a{
        margin-top: 30px;
    }
    .sustainability a:hover {
        opacity: .8;
    }
}