@media (min-width: 641px) {
        .profile {
            max-width: 110%;
        }
        img.explanation {
            max-width: 360px;
        }
    }
    
    @media (max-width: 640px) {
        #talk_wrap h2 img {
            width: 100%;
            max-width: 640px;
            margin: 0 auto;
        }
        #talk_wrap h2 {
            overflow: hidden;
        }
        #index_nav .title {
            line-height: 0
        }
        #index_nav .title img {
            width: 130%;
            max-width: 640px;
            margin-left: -15%;
        }
        #index_nav .disabled a .title {
            overflow: hidden;
        }
        img.explanation {
            max-width: 280px;
        }
    }
    #talk_body img {
        pointer-events: none;
    }