CSS integration with HTML : <p>I have created a separate CSS file for a tool tip as below.</p>

<pre><code>.help-tip{
position: absolute;
top: 18px;
right: 18px;
text-align: center;
background-color: #BCDBEA;
border-radius: 50%;
width: 24px;
height: 24px;
font-size: 14px;
line-height: 26px;
cursor: default;
    }

    .help-tip:before{
content:'?';
font-weight: bold;
color:#fff;
    }

    .help-tip:hover p{
display:block;
transform-origin: 100% 0%;

-webkit-animation: fadeIn 0.3s ease-in-out;
animation: fadeIn 0.3s ease-in-out;

    }

    .help-tip p{
display: none;
text-align: left;
background-color: #1E2021;
padding: 20px;
width: 300px;
position: absolute;
border-radius: 3px;
box-shadow: 1px 1px 1px rgba(0, 0, 0, 0.2);
right: -4px;
color: #FFF;
font-size: 13px;
line-height: 1.4;
    }

    .help-tip p:before{
position: absolute;
content: '';
width:0;
height: 0;
border:6px solid transparent;
border-bottom-color:#1E2021;
right:10px;
top:-12px;
    }

    .help-tip p:after{
width:100%;
height:40px;
content:'';
position: absolute;
top:-40px;
left:0;
    }

    @-webkit-keyframes fadeIn {
0% {
    opacity:0;
    transform: scale(0.6);
}

100% {
    opacity:100%;
    transform: scale(1);
}
    }

    @keyframes fadeIn {
0% { opacity:0; }
100% { opacity:100%; }
    }
</code></pre>

<p>From this file calling the .help-tipclass from that in html file as below. I am expecting the tool tip to be shown which is not happening as expected. Earlier I had written css code in same html file under style section but then moved css code to separate file. </p>

<pre><code>&lt;div class="domtooltip_style.help-tip"&gt;
                     &lt;p&gt;&lt;b&gt;Deal-O-Matic (DOM)&lt;/b&gt; has implemented multiple controls and safeguards for deal creation to ensure deal quality and to ensure that automatically created   deals meet retail teams’ business requirements.&lt;br&gt;
                     &lt;b&gt;Contribution Profit (CP) Check&lt;/b&gt;: DOM ensures that Deals created automatically are CP positive through the duration of the deal and ends deals that turned   CP negative.&lt;/p&gt;
                   &lt;/div&gt; 
</code></pre>

<p>Appreciate if someone can correct me to call class from CSS file in HTML file. </p>
