Javascript 中心响应滑块导航箭头在滑块中？

我的网站上有一个ResponsiveSlides滑块，我正试图使上一个/下一个导航箭头垂直居中于滑块的左右边缘

当我调整浏览器的大小时，它们会四处移动，右/下一个箭头似乎在滑块外悬挂了几个像素，并且在480px断点周围发生了一些奇怪的事情（一旦你移动到比480px小一点的位置，滑块就会比下面的列宽一点；另外，箭头会在屏幕下方更远处结束）.

你可以现场观看

js

快速解决方案：

需要设置

位置：相对，如下所示：

<div class="col span_3_of_3" style="position: relative;">
    <ul id="slider" class="rslides rslides1">
        ...content...
    </ul>
    <a class="rslides_nav rslides1_nav prev" href="#">Previous</a>
    <a class="rslides_nav rslides1_nav next" href="#">Next</a>
</div>



…内容。。。

设置#滑块的父项（.col.span_3_of_3）的位置以及Varider提到的上一个/下一个相对链接只能解决部分问题

<div class="col span_3_of_3" style="position: relative;">
    <ul id="slider" class="rslides rslides1">
        <li id="rslides1_s0" class="" style="display: block; float: none; position: absolute; opacity: 0; z-index: 1; -webkit-transition: opacity 500ms ease-in-out; transition: opacity 500ms ease-in-out;">
            <img src="assets/slider/buzz-covers.jpg" alt="buzz covers">
        </li>
        <li id="rslides1_s1" style="float: left; position: relative; opacity: 1; z-index: 2; display: list-item; -webkit-transition: opacity 500ms ease-in-out; transition: opacity 500ms ease-in-out;" class="rslides1_on">
            <img src="assets/slider/slab-happy.png" alt="slab happy">
        </li>
        <li id="rslides1_s2" style="float: none; position: absolute; opacity: 0; z-index: 1; display: list-item; -webkit-transition: opacity 500ms ease-in-out; transition: opacity 500ms ease-in-out;" class="">
            <img src="assets/slider/gridbook.jpg" alt="gridbook">
        </li>
        <li id="rslides1_s3" style="float: none; position: absolute; opacity: 0; z-index: 1; display: list-item; -webkit-transition: opacity 500ms ease-in-out; transition: opacity 500ms ease-in-out;" class="">
            <img src="assets/slider/ninth-spread.jpg" alt="ninth letter">
        </li>
        <li id="rslides1_s4" style="float: none; position: absolute; opacity: 0; z-index: 1; display: list-item; -webkit-transition: opacity 500ms ease-in-out; transition: opacity 500ms ease-in-out;" class="">
            <img src="assets/slider/slinkster.jpg" alt="slinkster">
        </li>
        <li id="rslides1_s5" style="float: none; position: absolute; opacity: 0; z-index: 1; display: list-item; -webkit-transition: opacity 500ms ease-in-out; transition: opacity 500ms ease-in-out;" class="">
            <img src="assets/slider/buzz-spread.jpg" alt="buzz spread">
        </li>
    </ul>
    <a href="#" class="rslides_nav rslides1_nav prev">Previous</a><a href="#" class="rslides_nav rslides1_nav next">Next</a>
</div>


绝对定位元素相对于第一个父元素定位，该父元素的位置不是静态的

您的导航元素具有绝对定位，要使其工作，您需要将其容器位置属性设置为除静态之外的任何其他属性，正如其他答案所示。
您真是不可思议！这是迄今为止我在这里得到的最好和最详细的答案，你的解释真的帮助我（希望）下次我能自己解决这个问题。非常感谢你们，也感谢所有插话的人。
.rslides {
  position: relative;
  list-style: none;
  overflow: hidden;
  width: 100%;
  padding: 0;
  margin: 1.5em 0 0 0;
  background-color: #f7f7f7;
  }

.rslides li {
  -webkit-backface-visibility: hidden;
  position: absolute;
  display: none;
  width: 100%;
  left: 0;
  top: 0;
  }

.rslides li:first-child {
  position: relative;
  display: block;
  float: left;
  }

.rslides img {
  display: block;
  height: auto;
  float: left;
  width: 100%;
  border: 0;
  }

.rslides1_nav {
  position: absolute;
  -webkit-tap-highlight-color: rgba(0,0,0,0);
  top: 50%;
  left: 0;
  z-index: 99;
  opacity: 0.7;
  text-indent: -9999px;
  overflow: hidden;
  text-decoration: none;
  height: 61px;
  width: 38px;
  background: transparent url("themes.gif") no-repeat left top;
  margin-top: -45px;
  }

.rslides1_nav:active {
  opacity: 1.0;
  }

.rslides1_nav.next {
  left: auto;
  background-position: right top;
  right: 0;
  }

.rslides1_nav:focus {
  outline: none;
  }

.rslides_tabs {
  margin-top: 10px;
  text-align: center;
  }

.rslides_tabs li {
  display: inline;
  float: none;
  _float: left;
  *float: left;
  margin-right: 5px;
  }

.rslides_tabs a {
  text-indent: -9999px;
  overflow: hidden;
  -webkit-border-radius: 15px;
  -moz-border-radius: 15px;
  border-radius: 15px;
  background: #ccc;
  background: rgba(0,0,0, .2);
  display: inline-block;
  _display: block;
  *display: block;
  -webkit-box-shadow: inset 0 0 2px 0 rgba(0,0,0,.3);
  -moz-box-shadow: inset 0 0 2px 0 rgba(0,0,0,.3);
  box-shadow: inset 0 0 2px 0 rgba(0,0,0,.3);
  width: 9px;
  height: 9px;
  }

.rslides_tabs .rslides_here a {
  background: #222;
  background: rgba(0,0,0, .8);
  }

<div class="col span_3_of_3" style="position: relative;">
    <ul id="slider" class="rslides rslides1">
        ...content...
    </ul>
    <a class="rslides_nav rslides1_nav prev" href="#">Previous</a>
    <a class="rslides_nav rslides1_nav next" href="#">Next</a>
</div>

<div class="col span_3_of_3" style="position: relative;">
    <ul id="slider" class="rslides rslides1">
        <li id="rslides1_s0" class="" style="display: block; float: none; position: absolute; opacity: 0; z-index: 1; -webkit-transition: opacity 500ms ease-in-out; transition: opacity 500ms ease-in-out;">
            <img src="assets/slider/buzz-covers.jpg" alt="buzz covers">
        </li>
        <li id="rslides1_s1" style="float: left; position: relative; opacity: 1; z-index: 2; display: list-item; -webkit-transition: opacity 500ms ease-in-out; transition: opacity 500ms ease-in-out;" class="rslides1_on">
            <img src="assets/slider/slab-happy.png" alt="slab happy">
        </li>
        <li id="rslides1_s2" style="float: none; position: absolute; opacity: 0; z-index: 1; display: list-item; -webkit-transition: opacity 500ms ease-in-out; transition: opacity 500ms ease-in-out;" class="">
            <img src="assets/slider/gridbook.jpg" alt="gridbook">
        </li>
        <li id="rslides1_s3" style="float: none; position: absolute; opacity: 0; z-index: 1; display: list-item; -webkit-transition: opacity 500ms ease-in-out; transition: opacity 500ms ease-in-out;" class="">
            <img src="assets/slider/ninth-spread.jpg" alt="ninth letter">
        </li>
        <li id="rslides1_s4" style="float: none; position: absolute; opacity: 0; z-index: 1; display: list-item; -webkit-transition: opacity 500ms ease-in-out; transition: opacity 500ms ease-in-out;" class="">
            <img src="assets/slider/slinkster.jpg" alt="slinkster">
        </li>
        <li id="rslides1_s5" style="float: none; position: absolute; opacity: 0; z-index: 1; display: list-item; -webkit-transition: opacity 500ms ease-in-out; transition: opacity 500ms ease-in-out;" class="">
            <img src="assets/slider/buzz-spread.jpg" alt="buzz spread">
        </li>
    </ul>
    <a href="#" class="rslides_nav rslides1_nav prev">Previous</a><a href="#" class="rslides_nav rslides1_nav next">Next</a>
</div>

.rslides_nav{
    margin-top:-19.5px !important;
}
.col.span_3_of_3{
    position:relative;
}