How do I join my list and div using css?

Tags: html,css,html5,css3

Problem :

I need your help.

I am attempting to no avail, in trying to figure out as to how to make my li join neatly with my div. I have attached an example of the problem as well as the desired result. Maybe there are some CSS tricks to this, but I am no where near that skilled to figure this out on my own, only to see that it has been done on some websites.

enter image description here

Desired result:
enter image description here

window.onload = function() {
  $("#list li").click(function(){
    var $li = $(this);
    var selector = $"show");   // => "#item1"
    $(selector).removeClass("hidden"); //but show matching item
    $(this).addClass("selected"); //but show matching item
    alert($(this).attr("class").split(' '))
  $("#list li").eq(0).click();
* {
  font-family: Segoe UI;
  font-size: 9pt;
#container {
  bottom: 0; left: 0; top: 0; right: 0;
  margin: auto;
  position: absolute;
  width: 900px;
  height: 600px;
#list {
  list-style-type: none;
  padding: 0;
  margin: 0;
#list li {
  margin:0 0 10px 0;
  background: #FFF;
  padding: 10px;
  cursor: pointer;
  color: rgb(149,149,149);
  font-size: 11pt;
.item {
  width: 100%;
  height: 100%;
  border: 1px solid red;
#menu {
  float: left;
  width: 25%;
  height: 100%;
#content {
  float: left;
  width: 75%;
  background-color: rgb(238,238,238);
  height: 100%;
.hidden{ display:none; }
#list li.selected {
  color: rgb(149,149,149);
  border-top: 1px solid red;
  border-bottom: 1px solid red;
  border-left: 1px solid red;
.selected {
  background: rgb(238,238,238) !important;
  color: rgb(51,51,51) !important;
  font-weight: bold;
<script src=""></script>
<div id="container">
  <div id="menu">
    <ul id="list">
      <li data-show="#item1">File Information</li>
      <li data-show="#item2">My Summary</li>
      <li data-show="#item3">Comments</li>
  <div id="content">
    <div id="item1" class="hidden item">FILE INFORMATION</div>
    <div id="item2" class="hidden item">MY SUMMARY</div>
    <div id="item3" class="hidden item">COMMENTS</div>

Solution :

   #list li.selected {
      color: rgb(149,149,149);
      border-top: 1px solid red;
      border-bottom: 1px solid red;
      border-left: 1px solid red;
      width: 205px;
      z-index: 40;
      position: absolute;

Please try this

Hope this help you.

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