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HTML 

              
                <header role="banner">
  <h1>Admin Panel</h1>
  <ul class="utilities">
    <li class="users"><a href="#">My Account</a></li>
    <li class="logout warn"><a href="">Log Out</a></li>
  </ul>
</header>

<nav role="navigation">
  <ul class="main">
    <li class="dashboard"><a href="#">Dashboard</a></li>
    <li class="write"><a href="#">Write Post</a></li>
    <li class="edit"><a href="#">Edit Posts</a></li>
    <li class="comments"><a href="#">Comments</a></li>
    <li class="users"><a href="#">Manage Users</a></li>
  </ul>
</nav>

<main role="main">
  <section class="panel important">
    <h2>Welcome to Your Dashboard </h2>
    <ul>
      <li>Important panel that will always be really wide Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</li>
      <li>Aliquam tincidunt mauris eu risus.</li>
      <li>Vestibulum auctor dapibus neque.</li>
    </ul>
  </section>
  <section class="panel">
    <h2>Posts</h2>
    <ul>
      <li><b>2458 </b>Published Posts</li>
      <li><b>18</b> Drafts.</li>
      <li>Most popular post: <b>This is a post title</b>.</li>
    </ul>
  </section>
  <section class="panel">
    <h2>Chart</h2>
    <ul>
      <li>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</li>
      <li>Aliquam tincidunt mauris eu risus.</li>
      <li>Vestibulum auctor dapibus neque.</li>
    </ul>
  </section>
  <section class="panel important">
    <h2>Write a post</h2>
    <form action="#">
      <div class="twothirds">
        <label for="name">Text Input:</label>
        <input type="text" name="name" id="name" placeholder="John Smith" />

        <label for="textarea">Textarea:</label>
        <textarea cols="40" rows="8" name="textarea" id="textarea"></textarea>

      </div>
      <div class="onethird">
        <legend>Radio Button Choice</legend>

        <label for="radio-choice-1">
          <input type="radio" name="radio-choice" id="radio-choice-1" value="choice-1" /> Choice 1
        </label>

        <label for="radio-choice-2">
          <input type="radio" name="radio-choice" id="radio-choice-2" value="choice-2" /> Choice 2
        </label>


        <label for="select-choice">Select Dropdown Choice:</label>
        <select name="select-choice" id="select-choice">
          <option value="Choice 1">Choice 1</option>
          <option value="Choice 2">Choice 2</option>
          <option value="Choice 3">Choice 3</option>
        </select>


        <div>
          <label for="checkbox">
            <input type="checkbox" name="checkbox" id="checkbox" /> Checkbox
          </label>
        </div>

        <div>
          <input type="submit" value="Submit" />
        </div>
      </div>
    </form>
  </section>
  <section class="panel">
    <h2>feedback</h2>
    <div class="feedback">This is neutral feedback Lorem ipsum dolor sit amet, consectetur adipisicing elit. Alias, praesentium. Libero perspiciatis quis aliquid iste quam dignissimos, accusamus temporibus ullam voluptatum, tempora pariatur, similique molestias blanditiis at sunt earum neque.</div>
    <div class="feedback error">This is warning feedback
<ul>
  <li>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</li>
  <li>Aliquam tincidunt mauris eu risus.</li>
  <li>Vestibulum auctor dapibus neque.</li>
</ul>  </div>
    <div class="feedback success">This is positive feedback</div>

  </section>
  <section class="panel ">
    <h2>Table</h2>
    <table>
      <tr>
        <th>Username</th>
        <th>Posts</th>
        <th>comments</th>
        <th>date</th>
      </tr>
      <tr>
        <td>Pete</td>
        <td>4</td>
        <td>7</td>
        <td>Oct 10, 2015</td>

      </tr>
      <tr>
        <td>Mary</td>
        <td>5769</td>
        <td>2517</td>
        <td>Jan 1, 2014</td>
      </tr>
    </table>
  </section>

</main>
<footer role="contentinfo">Easy Admin Style by Melissa Cabral</footer>
!

CSS 

              
                // ===========================  colors 
// used for page bg
$base-color:#f1f2f7;
// used for panel bg 
$primary-color:white;
$primary-text:darkslategray;

$secondary-color: #2a3542;
$secondary-text:#ddd;

$tertiary-color:slategray;
$tertiary-text:#ddd;
$accent:lightsalmon;
$accent-neutral:#dde;
$accent-information:khaki;
$accent-positive:turquoise;
$accent-negative:lightsalmon;

//icons
$logout-icon:"\f08b";
$write-icon:"\f055";
$edit-icon:"\f040";
$comments-icon:"\f27b";
$user-icon:"\f007";
$dashboard-icon:"\f0e4";

// ========================= MIXINS
@mixin clearfix {
  &:after {
    content: "";
    display: table;
    clear: both;
  }
}
@mixin round-corner() {
  -webkit-border-radius: .3rem;
     -moz-border-radius: .3rem;
      -ms-border-radius: .3rem;
          border-radius: .3rem;
}
@mixin left-icon(){
   content: "\f248";
    font-family: FontAwesome;
    padding-right:.6em;
}
@mixin shadow(){
  box-shadow:1px 1px 3px rgba(black,.15);
}
@mixin button($color){
  background: $color;
  border:none;
  border-bottom:solid 4px darken($color, 10%);
  padding:.7em 3em;
  margin: 1em 0;
  color:white;
  text-shadow: 0 -1px 0 darken($color, 10%);
  font-size:1.1em;
  font-weight:bold;
  display:inline-block;
  width:auto;
  -webkit-border-radius: .5em;
     -moz-border-radius: .5em;
      -ms-border-radius: .5em;
          border-radius: .5em;
}
@mixin feedback($color, $icon: '\f06a'){
  background: lighten( $color, 20%);
  color:darken($color, 45%);
  margin:1em;
  padding: .5em .5em .5em 2em;
  border:solid 1px $color;
  &:before{
    content:$icon;
    font-family:fontawesome;
    color:darken($color, 20%);
    margin-left:-1.5em;
    margin-right:.5em;
  }
  li:before{
    border-left-color:lighten($color, 10%);
  }
}
@import url(https://fonts.googleapis.com/css?family=Open+Sans:300,400,700,400italic);
@import url(https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.4.0/css/font-awesome.min.css);
html {
  box-sizing: border-box;
}
*, *:before, *:after {
  box-sizing: inherit;
}

body {
  background:$base-color;
  font-family: 'Open Sans', arial, sans-serif;
  color:$primary-text;
}
body.login{
  background-color: white;
  max-width: 500px;
  margin: 10vh auto;
  padding:1em;
  height:auto;
}

/* general utility classes */
.warn{
    color:$accent-negative;
}
/* header */
header[role=banner] {
  background: white;
  @include shadow;
   h1 {
    margin: 0;
    font-weight: 300;
    padding: 1rem;
    &:before {
       @include left-icon;
       color: $accent-positive; 
    }
  }
  .utilities {   

    width:100%;
    background: $tertiary-color;
    color:$tertiary-text;
    li {
      border-bottom:solid 1px rgba(white,.2);
  
      a{
        padding:.7em;
        display:block;
      }  
    }
  }
  
}

/* header */
.utilities  a:before{
  @include left-icon;
}
.logout a:before{
  content: $logout-icon;
}
.users a:before{
  content:$user-icon;
}

nav[role=navigation] {
  background: $secondary-color;
  color:$secondary-text;
  li{
    border-bottom:1px solid rgba(white,.08);
    a{
      color:$secondary-text;
      text-decoration:none;
      display:block;
      padding:.7em;
      &:hover{
        background-color:rgba(white,.05);
      }
      &:before{
        @include left-icon;
      }
    }
  }
  /* icons */
  .dashboard a:before{
    content: $dashboard-icon;
  }
  .write a:before{
      content: $write-icon;
  }
  .edit a:before{
      content: $edit-icon;
  }
  .comments a:before{
      content: $comments-icon;
  }
  .users a:before{
      content: $user-icon;
  }
}
/* current nav item */
.current{
    background-color:rgba(white, .1);
}
.dashboard .dashboard a,.write .write a,.edit .edit a, .comments .comments a, .users .users a{
  @extend .current;
}

footer[role=contentinfo] {
  background: $tertiary-color;
  color:$tertiary-text;
    font-size:.8em;
    text-align:center;
   padding:.2em;
}
/* panels */

.panel {
  background-color: $primary-color;
  color:$primary-text;
  @include round-corner;
  margin: 1%;
  
  & > h2, & > ul {
    margin: 1rem;
  }
 
}


/* typography */
a{
  text-decoration:none;
  color:inherit;
}
h2,
h3,
h4 {
  font-weight: 300;
  margin:0;
}
h2{
  color:darken($accent-positive, 15%);
}
b{
  color:$accent;
}
.hint{
  color:lightslategray;
}
/* lists */
ul, li{
   list-style-type: none;
    margin: 0;
    padding: 0;
}
main{
    li {
      position: relative;
      padding-left: 1.2em;
      margin:.5em  0;
      &:before {
        content: '';
        position: absolute;
        width: 0;
        height: 0;
        left:0;
        top:.3em;
        border-left: solid 10px $accent-neutral;
        border-top: solid 5px transparent;
        border-bottom: solid 5px transparent;
      }
    }
}
/* forms */
form{
  input, textarea, select{
    @include clearfix;
    width:100%;
    display:block;
    border:solid 1px $accent-neutral;
    padding:.5em;
  }
  input[type=checkbox],input[type=radio]{
    display:inline;
    width:auto;
  }
  label, legend{
    display:block;
    margin:1em 0 .5em;
  }
  input[type=submit]{
    @include button($accent-positive);    
  }
  input[type=submit]:hover{
    @include button($accent-information);    
  }
}
/* feedback */
.error{
  background-color: lighten( $accent-negative, 20%);
  border-color:lighten( $accent-negative, 10%);
}
label.error{
  padding:.2em .5em;
}
.feedback{
  @include feedback($accent-information, '\f05a' );
  &.error{
    @include feedback($accent-negative, '\f06a');
  }
  &.success{
    @include feedback($accent-positive, '\f164');
  }
}
/* tables */
table{
  border-collapse:collapse;
  width:96%;
  margin:2%;  
}
th {
  text-align: left; 
  font-weight: 400;
  font-size: 13px;
  text-transform: uppercase;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  padding: 0 10px;
  padding-bottom: 14px;
}
tr:not(:first-child):hover {
  background: rgba(0, 0, 0, 0.1);
}
td {
  line-height: 40px;
  font-weight: 300;  
  padding: 0 10px;
}

@media screen and (min-width:600px) {
  html, body {
    height: 100%;
  }
  header[role=banner]{
    position:fixed;
    top:0;
    left:0;
    width:100%;
    z-index:99;
    height:75px;
    .utilities{
      position: absolute;
      top: 0;
      right: 0;
      background: transparent;
      color:$primary-text;
      width:auto;
      li{
        display:inline-block;     
        a{
             padding:.5em 1em;
        }
      }
    }  
  }
  nav[role=navigation] {
    position:fixed;
    width: 200px;
    top:75px;
    bottom:0px;
  }
  
  main[role=main] {
   margin:75px 0 40px 200px;
   @include clearfix;
  }
  .panel{
    margin:2% 0 0 2%;
    float:left;
    width:96%;
    @include clearfix;
  }
  .box{
    padding:1rem;
  }
  .onethird{
    @extend .box;
    width:33.333%;
    float:left;
  }
  .twothirds{
    @extend .box;
    width:66%;
    float:left;
  }
  footer[role=contentinfo] {
    clear:both;
    margin-left:200px;
  } 
}

@media screen and (min-width:900px) {
   footer[role=contentinfo] {
    position:fixed;
    width:100%;
    bottom:0;
    left:0px;  
    margin:0;
  }
  .panel {
    width: 47%;
      clear: none;
   
    &.important {
      width: 96%;     
    }
    &.secondary {
      width: 23%;      
    }
  }  
}
!

JS 

              
                /**
* very much a work in progress
* HTML + CSS for a class demo in WIP400 at Platt College San Diego
*
*
* @TODO:
*  form inputs
*  responsive tables
*  more icons: trash
*  matching login/register form
*  toggle menus
*/
!
999px

Console