client/assets/css/font-size.css

/* レスポンシブのフォントサイズ指定 */

@media screen and (min-width: 0px) and (max-width: 479px) {
    * {
        font-size: 16px;
    }
    h1, h2 {
        font-size: 1.5em;
    }
    h3, h4 {
        font-size: 1.1em;
    }
    p, .panel-title, .form-control {
        font-size: 1em;
    }
    p.story {
        font-size: 1.0em;
    }
    .copyright {
        font-size: 0.7em;
    }
    #headTitle {
        font-size: 2.5em;
    }
    #photoname {
        font-size: 0.75em;
    }
}

@media screen and (min-width: 480px) and (max-width: 767px) {
    * {
        font-size: 17px;
    }
    .copyright {
        font-size: 14px;
    }
    p.story {
        font-size: 14px;
        line-height: 1.8;
    }
    #headTitle {
        font-size: 3.15em;
    }
    #photoname {
        font-size: 1em;
    }
}

@media screen and (min-width: 768px) {
    * {
        font-size: 18px;
    }
    p, .panel-title, .form-control {
        font-size: 1.em;
    }
    li {
        font-size: 0.9em;
    }
    .copyright {
        font-size: 18px;
    }
    p.story {
        font-size: 18px;
        line-height: 1.8;
    }
    #headTitle {
        font-size: 3.8em;
    }
    #photoname {
        font-size: 1em;
    }
}