How can I make the background color fill the entire width of the page? I am new to HTML and CSS, so below is the code I have used for setting the background. Please provide clear instructions on what changes I need to make in my code to achieve this. I know some modifications are required but I'm unsure of the exact changes needed.
.black {
background-color: black;
font-size: 20px;
}<div class="black">
<hr>
<h2 class="white">Documentation Examples</h2>
<a>
<ul class="documentations">
<li>
Savings or Checkings Accounts
</li>
<li>
Stocks, Dividends, Bonds or Debentures
</li>
<li>
Life Insurance Accounts
</li>
<li>
Escrow Accounts
</li>
<li>
Negotiable Instruments, Certified Checks, Money Orders, or Travelers Checks.
</li>
<li>
Safe Deposit Box Contents
</li>
<li>
Business Accounts
</li>
<li>
Corporation/Business Entity/Partnership
</li>
<li>
Governmental Agency Accounts
</li>
<li>
Miscellaneous Accounts
</li>
</ul>
</nav>
</a>
<br>
<br>
<br>
</div>