css不让字体倾斜怎么实现

<style>

    .div_italic{ font-style:italic}

    .div_oblique{ font-style:oblique}

    .div_normal i{ font-style:normal}

    /* 去掉div_normal对象I斜体标签默认斜体样式 */

</style>

<div class="div_italic">我被加斜体</div>

<div class="div_oblique">我被加倾斜</div>

<div><i>我加I标签斜体</i></div>

<div class="div_normal"><i>I斜体被CSS去掉</i></div>