htmlcsssidebar

Issue with Sidebar with menu items

I found a sidebar that I liked. I will add the link to give credit to the original creator. CSS sidebar menu examples And then the Pure CSS flying sidebar.

Now I was playing around with it and eventually I started to remove some items. And I started noticing some strange behavior when menu items got below 4. It was especially noticable when it was only 1 item. See the below image.

enter image description here

Here is the code and below it a codepen link html part

  <section class="app">
  <aside class="sidebar">
    <header>
      Menu
    </header>
    <nav class="sidebar-nav">

      <ul>
        <li>
          <a href="#"><i class="ion-bag"></i> <span>Menu 1</span></a>
          <ul class="nav-flyout">
            <li>
              <a href="#"><i class="ion-ios-color-filter-outline"></i>Menu Item 1</a>
            </li>
            <li>
              <a href="#"><i class="ion-ios-clock-outline"></i>Menu Item 2</a>
            </li>
            <li>
              <a href="#"><i class="ion-android-star-outline"></i>Menu Item 3</a>
            </li>
            <li>
              <a href="#"><i class="ion-heart-broken"></i>Menu Item 4</a>
            </li>
          </ul>
        </li>
        <li>
          <a href="#"><i class="ion-ios-settings"></i> <span class="">Menu 2</span></a>
          <ul class="nav-flyout">
            <li>
              <a href="#"><i class="ion-ios-alarm-outline"></i>Menu Item 1</a>
            </li>
            <li>
              <a href="#"><i class="ion-ios-camera-outline"></i>Menu Item 2</a>
            </li>
            <li>
              <a href="#"><i class="ion-ios-chatboxes-outline"></i>Menu Item 3</a>
            </li>
          </ul>
        </li>
        <li>
          <a href="#"><i class="ion-ios-briefcase-outline"></i> <span class="">Menu 3</span></a>
          <ul class="nav-flyout">
            <li>
              <a href="#"><i class="ion-ios-flame-outline"></i>Menu Item 1</a>
            </li>
            <li>
              <a href="#"><i class="ion-ios-lightbulb-outline"></i>Menu Item 2</a>
            </li>
          </ul>
        </li>
        <li>
          <a href="#"><i class="ion-ios-analytics-outline"></i> <span class="">Menu 4</span></a>
          <ul class="nav-flyout">
            <li>
              <a href="#"><i class="ion-ios-timer-outline"></i>Menu Item 1</a>
            </li>
          </ul>
        </li>
        <li>
          <a href="#"><i class="ion-ios-paper-outline"></i> <span class="">Menu 5</span></a>
          <ul class="nav-flyout">
            <li>
              <a href="#"><i class="ion-ios-filing-outline"></i>Menu Item 1</a>
            </li>
            <li>
              <a href="#"><i class="ion-ios-information-outline"></i>Menu Item 2</a>
            </li>
            <li>
              <a href="#"><i class="ion-ios-paperplane-outline"></i>Menu Item 3</a>
            </li>
            <li>
              <a href="#"><i class="ion-android-star-outline"></i>Menu Item 4</a>
            </li>
             <li>
              <a href="#"><i class="ion-android-star-outline"></i>Menu Item 5</a>
            </li>
            <li>
              <a href="#"><i class="ion-android-star-outline"></i>Menu Item 6</a>
            </li>
            <li>
              <a href="#"><i class="ion-android-star-outline"></i>Menu Item 7</a>
            </li>
            <li>
              <a href="#"><i class="ion-android-star-outline"></i>Menu Item 8</a>
            </li>
            
          </ul>
        </li>
      </ul>
    </nav>
  </aside>
</section>

CSS part

@import url(https://fonts.googleapis.com/css?family=Source+Sans+Pro:400,300,600);

body {
  font-family: "Lato";
  font-size: 100%;
  overflow-y: scroll;
  font-family: sans-serif;
  -ms-text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  background-color: #fefefe;
}

a {
  text-decoration: none;
  -webkit-transition: all 0.6s ease;
  -moz-transition: all 0.6s ease;
  transition: all 0.6s ease;
}
a:hover {
  -webkit-transition: all 0.6s ease;
  -moz-transition: all 0.6s ease;
  transition: all 0.6s ease;
}

.app {
  height: 100vh;
}

/* -------------
Sidebar
----------------*/
.sidebar {
  position: absolute;
  width: 17em;
  height: 100%;
  top: 0;
  overflow: hidden;
  background-color: #19222a;
  -webkit-transform: translateZ(0);
  visibility: visible;
  -webkit-backface-visibility: hidden;
}
.sidebar header {
  background-color: #09f;
  width: 100%;
  display: block;
  padding: 0.75em 1em;
}

/* -------------
Sidebar Nav
----------------*/
.sidebar-nav {
  position: fixed;
  background-color: #19222a;
  height: 100%;
  font-weight: 400;
  font-size: 1.2em;
  overflow: auto;
  padding-bottom: 6em;
  z-index: 9;
  overflow: hidden;
  -webkit-overflow-scrolling: touch;
  /* -------------
  Chev elements
  ----------------*/
  /* -------------
  Nav-Flyout
  ----------------*/
  /* -------------
  Hover
  ----------------*/
}
.sidebar-nav ul {
  list-style: none;
  display: block;
  padding: 0;
  margin: 0;
}
.sidebar-nav ul li {
  margin-left: 0;
  padding-left: 0;
  display: inline-block;
  width: 100%;
  /* -------------
  Sidebar: icons
  ----------------*/
}
.sidebar-nav ul li a {
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.75em;
  padding: 1.05em 1em;
  position: relative;
  display: block;
}
.sidebar-nav ul li a:hover {
  background-color: rgba(0, 0, 0, 0.9);
  -webkit-transition: all 0.6s ease;
  -moz-transition: all 0.6s ease;
  transition: all 0.6s ease;
}
.sidebar-nav ul li i {
  font-size: 1.8em;
  padding-right: 0.5em;
  width: 9em;
  display: inline;
  vertical-align: middle;
}
.sidebar-nav > ul > li > a:after {
  content: "";
  font-family: ionicons;
  font-size: 0.5em;
  width: 10px;
  color: #fff;
  position: absolute;
  right: 0.75em;
  top: 45%;
}
.sidebar-nav .nav-flyout {
  position: absolute;
  background-color: #080D11;
  z-index: 9;
  left: 2.5em;
  top: 0;
  height: 100vh;
  -webkit-transform: translateX(100%);
  -moz-transform: translateX(100%);
  -ms-transform: translateX(100%);
  -o-transform: translateX(100%);
  transform: translateX(100%);
  -webkit-transition: all 0.5s ease;
  -moz-transition: all 0.5s ease;
  transition: all 0.5s ease;
}
.sidebar-nav .nav-flyout a:hover {
  background-color: rgba(255, 255, 255, 0.05);
}
.sidebar-nav ul > li:hover .nav-flyout {
  -webkit-transform: translateX(0);
  -moz-transform: translateX(0);
  -ms-transform: translateX(0);
  -o-transform: translateX(0);
  transform: translateX(0);
  -webkit-transition: all 0.5s ease;
  -moz-transition: all 0.5s ease;
  transition: all 0.5s ease;
}

example

Does someone know why this behavior happens and how to solve this?

I have been using google just to see what some of the CSS does. And how the menu is build. I noticed that the menu exists next too the visible Menu and it slides too the left at the corrrect moment. Also I noticed that the CSS part .sidebar-nav .nav-flyout { positions in part the fly in menu. I just do not understand why more menu items makes a difference for this behavior. Hopefully someone can help me.

Solution

  • I have realized that you have to set the property: width: 100vh; the .nav-flyout class. The code would remain:

    .sidebar-nav .nav-flyout {
  position: absolute;
  background-color: #080D11;
  z-index: 9;
  left: 2.5em;
  top: 0;
  height: 100vh;
  width: 100vh;
  -webkit-transform: translateX(100%);
  -moz-transform: translateX(100%);
  -ms-transform: translateX(100%);
  -o-transform: translateX(100%);
  transform: translateX(100%);
  -webkit-transition: all 0.5s ease;
  -moz-transition: all 0.5s ease;
  transition: all 0.5s ease;
}

    I understand that it is related to the Z-index and that the element does not occupy the entire screen so the elements can be seen.