我有一个模式框,它放置在包含带有复选框的表单的页面上。问题是,当我打开模式时,一切正常,除了复选框位于模式之上。
这是模态的JS:
<script>
    usr_ddown = "hidden";
    function lchr_usr_menu(){
        if(usr_ddown === "hidden"){
            document.getElementById("ur_menu_lchr").innerHTML = "▲";
            $("#usr_dropdown").fadeIn(200);
            usr_ddown = "vis";
            return false;
                }
        if(usr_ddown === "vis"){
                    document.getElementById("ur_menu_lchr").innerHTML = "▼";
            $("#usr_dropdown").fadeOut(200);
            usr_ddown = "hidden";
            return false;
        }
    }
</script>
模态的 HTML/CSS:
<div id="usr_dropdown" style="z-index 100;position: fixed; top:81px; left:0px; right: auto; background: #470047; padding: 10px; right:0px; height: 300px;-webkit-box-shadow: 0 0px 5px #000000;-moz-box-shadow: 0 0px 5px #000000;box-shadow: 0 0px 5px #000000;opacity:0.9;filter:alpha(opacity=90);">
                <div style="text-align: right;position: absolute; bottom:5px;right:5px;">
                    [<a href="javascript:void(0);" onclick="lchr_usr_menu()">close</a>]
                </div>
            </div>
现在对于复选框:
<input type="checkbox" value="YT_vid" name="YT_vid" id="YT_vid" onclick="inc_yt_f()" />
出于某种原因,除了复选框之外,所有元素都在模式后面,我运行了谷歌搜索并没有找到太多。需要修复什么?
提前致谢!
编辑:
复选框 CSS:
  input[type=checkbox],
  input[type=radio] {
  -webkit-appearance: none;
  appearance: none;
  width: 13px;
  height: 13px;
  margin: 0;
  cursor: pointer;
  vertical-align: bottom;
  background: #fff;
  border: 1px solid #dcdcdc;
  -webkit-border-radius: 1px;
  -moz-border-radius: 1px;
  border-radius: 1px;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  position: relative;
  }