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HTML

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About the <head>

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Insecure Resource

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CSS

About CSS Preprocessors

CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

Vendor Prefixing

About Vendor Prefixing

To get the best cross-browser support, it is a common practice to apply vendor prefixes to CSS properties and values that require them to work. For instance -webkit- or -moz-.

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JavaScript

About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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Packages

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Search for and use JavaScript packages from npm here. By selecting a package, an import statement will be added to the top of the JavaScript editor for this package.

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HTML 

              
                <div class="jumbotron jumbotron-fluid">
  <div class="container">
    <h1 class="display-4">FAQ</h1>
    <p class="lead">This is a Sample FAQ page.</p>
    <p> Read my blog <a href="https://sahadsarang.com/blog/">Sahad Sarang</a>
  </div>
</div>

<br>
<div class="container">
  <div class="row">
    <div class="col-md-12">
      <div class="panel-group" id="accordion" role="tablist" aria-multiselectable="true">
        <div class="panel panel-default">
          <div class="panel-heading" role="tab" id="headingOne">
            <h4 class="panel-title">
              <a data-toggle="collapse" data-parent="#accordion" href="#collapseOne" aria-expanded="true" aria-controls="collapseOne">
               What is Data Structure?
              </a>
            </h4>

          </div>
          <div id="collapseOne" class="panel-collapse collapse in" role="tabpanel" aria-labelledby="headingOne">
            <div class="panel-body">Data structure is a fundamental concept of any programming language, essential for algorithmic design.
</div>
          </div>
        </div>
        <div class="panel panel-default">
          <div class="panel-heading" role="tab" id="headingTwo">
            <h4 class="panel-title">
              <a class="collapsed" data-toggle="collapse" data-parent="#accordion" href="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo">
                Benefits of Learning Data Structures
              </a>
            </h4>

          </div>
          <div id="collapseTwo" class="panel-collapse collapse" role="tabpanel" aria-labelledby="headingTwo">
            <div class="panel-body">Any given problem has constraints on how fast the problem should be solved (time) and how much less resources the problem consumes(space). That is, a problem is constrained by the space and time complexity within which it has to be solved efficiently.
</div>
          </div>
        </div>
        <div class="panel panel-default">
          <div class="panel-heading" role="tab" id="headingThree">
            <h4 class="panel-title">
              <a class="collapsed" data-toggle="collapse" data-parent="#accordion" href="#collapseThree" aria-expanded="false" aria-controls="collapseThree">
                What is an array?
              </a>
            </h4>

          </div>
          <div id="collapseThree" class="panel-collapse collapse" role="tabpanel" aria-labelledby="headingThree">
            <div class="panel-body">Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. </div>
          </div>
        </div>
      </div>
    </div>
  </div>
</div>
!

CSS 

              
                
.panel-title > a:before {
    float: right !important;
    font-family: FontAwesome;
    content:"\f068";
    padding-right: 5px;
}
body{
  background-color:#f5f5f5;
}
.panel-title > a.collapsed:before {
    float: right !important;
    content:"\f067";
}
.panel-title > a:hover, 
.panel-title > a:active, 
.panel-title > a:focus  {
    text-decoration:none;
}
.panel-heading {
    padding: 20px 15px;
    border-bottom: 1px solid transparent;
    border-top-right-radius: 3px;
    border-top-left-radius: 3px;
}
.panel {
    margin-bottom: 20px !important;
    background-color: #ffffff;
    border: 1px solid transparent;
    -webkit-box-shadow: 0 1px 1px rgb(0 0 0 / 5%);
    box-shadow: 15px 16px 13px 8px rgb(4 4 4 / 5%);
}
.jumbotron {
    padding-top: 30px;
    padding-bottom: 30px;
    margin-bottom: 30px;
    color: inherit;
    background-color: #00bcd4;
    text-align: center;
    color: #fff;
}


a{
  color:#fff;
  text-decoration:underline;
}
!

JS
!
999px

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