我有两个单选按钮，默认情况下在safari浏览器中都会检查单选按钮

Question

Both the radio buttons are selected by default on safari browser.其他浏览器只显示一个选中的按钮。

<div class="col-md-2 col-xs-12 col-sm-12">
    <div class="pure-radiobutton ownerradio">
        <input id="radio1" name="radio1" type="radio" class="radio" value="1">
        <label for="radio1" style="color:#333;">Same as Owner</label>
    </div>
</div>

<div class="col-md-2 col-xs-12 col-sm-12">
    <div class="pure-radiobutton ownerradio ownerradio2">
        <input id="radio2" name="radio2" type="radio" class="" value="2"> 
        <label for="radio2" style="color:#333;">Same as Manager</label> 
    </div>
</div>