The Most Important HTML and CSS Codes You Should Know (Even If You Use a Website Builder)

HTML for structure, vs CSS for styling

HTML and CSS are the core building blocks of every website on the internet. If you’ve ever wondered how web pages are structured or styled, these are the languages behind it all. Whether you’re a beginner or just curious, learning some basic HTML and CSS can be incredibly useful – even if you’re using a powerful website builder like UltimateWB.

The good news? You don’t need to know any coding to build and customize your website with UltimateWB. Our user-friendly CMS handles the technical stuff for you, and the built-in Styles Manager lets you tweak designs without touching a single line of code. But if you do want to add your own HTML or CSS, UltimateWB gives you that freedom too.

Let’s walk through the most important HTML tags and CSS properties you should know – and how you can use them with or without coding.

📌 What is HTML and CSS?

HTML (HyperText Markup Language) is used to structure your web pages. It defines headings, paragraphs, links, images, and more.

CSS (Cascading Style Sheets) controls the visual appearance of that content – like fonts, colors, layouts, and spacing.

Think of HTML as the bones of your website, and CSS as the style that makes it look great.

🧱 Most Important HTML Tags to Know

Even if you’re not coding by hand, it’s good to recognize what’s happening behind the scenes.

Here are some of the most essential HTML tags:

  • <h1> to <h6> – Define headings (H1 is the largest, H6 the smallest)
  • <p> – Paragraphs of text
  • <a href="url"> – Hyperlinks
  • <img src="image.jpg" alt="description"> – Display images
  • <ul>, <ol>, <li> – Unordered and ordered lists
  • <div> – A container for other elements (used for layout)
  • <span> – Inline styling or highlighting
  • <form> – Collect user input through fields like text boxes and buttons

💡 Tip: If you view the source code of any webpage, you’ll see these tags in action!

🎨 Most Useful CSS Properties to Know

CSS lets you style your web pages exactly the way you want. These are some of the most common and useful properties:

  • color – Text color
  • background-color – Background color of an element
  • font-size – Size of your text
  • font-family – Choose the typeface
  • margin – Space outside an element
  • padding – Space inside an element
  • border – Add or remove borders
  • text-align – Align text left, right, center, or justify
  • display – Define layout behavior (like block, inline, or flex)
  • position – Set element placement (static, relative, absolute, fixed)

Example CSS snippet:

p {
color: #333;
font-size: 18px;
line-height: 1.5;
}

🚀 How UltimateWB Makes HTML and CSS Easy

You don’t have to remember any of this to build a great-looking website with UltimateWB. Here’s how:

Page Editor (No Coding Needed)

UltimateWB CMS, Page Editor Box, formatting and adding content
UltimateWB Page Editor Box

Our built-in CMS includes a visual page editor that lets you add content, format it, insert images, create links, and more – better than using a word processor. You’ll be creating clean, responsive HTML code without having to write any of it yourself.

Read all about the UltimateWB Content Management System. Here’s a couple good how-to articles:

Further Formatting Webpage With Divs – Without Coding!

How to make content sections with custom formatting also RESPONSIVE

🎨 Built-In Styles Manager (Customize Without CSS)

UltimateWB Styles Manager, fully customize
UltimateWB Styles Manager: user is choosing a background-color here, and can set a background image, width, margins and padding values…and more…

UltimateWB includes a powerful Styles Manager where you can control fonts, colors, layout spacing, hover effects, and more – all without writing CSS code. Everything updates live across your site.

💻 Want to Code? You Can!

If you do want to write your own HTML or CSS, UltimateWB gives you that control too. You can insert your own custom code wherever you need it, or even modify the global site styles directly.

💡 When Knowing HTML and CSS Comes in Handy

Even if you’re using a no-code builder, having a basic understanding of HTML and CSS is helpful for:

  • Tweaking Email Templates
  • Embedding Custom Widgets or Forms
  • Making Minor Adjustments to Your Layout
  • Troubleshooting Display Issues
  • Adding Responsive Design Features

Plus, if you ever hand off your site to a developer, you’ll be able to communicate more effectively about what you want.

Final Takeaway

You don’t need to be a coder to build a professional website. Tools like UltimateWB let you take full control – whether you prefer to click-and-edit or code your own custom touches.

Understanding HTML and CSS gives you a solid foundation, and with UltimateWB, you can choose the path that works best for you.

Related: Is HTML and CSS enough to create a website?

Can HTML, CSS and JavaScript create a website?

👉 Ready to Try It Out?

Build your dream website without coding – or enhance it with your own HTML and CSS.

Get started with UltimateWB now →

We also offer web design packages if you would like your website designed and built for you.

Got a techy/website question? Whether it’s about UltimateWB or another website builder, web hosting, or other aspects of websites, just send in your question in the “Ask David!” form. We will email you when the answer is posted on the UltimateWB “Ask David!” section.

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