{"id":146,"date":"2026-10-19T18:17:28","date_gmt":"2026-10-19T18:17:28","guid":{"rendered":"https:\/\/shaplakanon.com\/devlearn\/learn\/borders-radius-and-shadows\/"},"modified":"2026-10-19T18:22:36","modified_gmt":"2026-10-19T18:22:36","slug":"borders-radius-and-shadows","status":"publish","type":"dl_tutorial","link":"https:\/\/shaplakanon.com\/devlearn\/learn\/borders-radius-and-shadows\/","title":{"rendered":"Borders, Radius, and Shadows"},"content":{"rendered":"<p class=\"dl-lead\">Borders define edges, border-radius rounds corners, and box-shadow adds depth. Use subtle shadows rather than heavy effects for a clean interface.<\/p>\n<h2>What you will learn<\/h2>\n<ul>\n<li>Explain the purpose of borders, radius, and shadows in a real website.<\/li>\n<li>Read and adapt a working example instead of memorizing syntax.<\/li>\n<li>Test your result and recognize a common implementation mistake.<\/li>\n<\/ul>\n<h2>Understanding the concept<\/h2>\n<p>Use subtle shadows for depth and keep focus outlines visible for keyboard users.<\/p>\n<p>CSS rules select elements and assign property\u2013value pairs. The cascade, specificity, and source order determine which declaration wins.<\/p>\n<p>This topic is part of the CSS learning track. Read the example carefully, identify each important element or statement, and try changing one part at a time. Small experiments help you see cause and effect.<\/p>\n<h2>Example 1: Working code<\/h2>\n<pre class=\"dl-tutorial-code\"><code>.card { border: 1px solid #e2e8f0; border-radius: 14px; box-shadow: 0 8px 24px rgb(15 23 42 \/ 8%); }<\/code><\/pre>\n<p>Create an HTML file containing <code>&lt;div class=\"practice\">Example&lt;\/div&gt;<\/code>. Add the stylesheet inside a <code>&lt;style&gt;<\/code> element or external CSS file.<\/p>\n<h2>How to understand this example<\/h2>\n<ol>\n<li>Identify the syntax introduced by this lesson.<\/li>\n<li>Read the code from top to bottom and predict what it will do.<\/li>\n<li>Run the code, then compare the result with your prediction.<\/li>\n<li>Change one value, selector, or element and run it again.<\/li>\n<\/ol>\n<h2>Example 2: A small experiment<\/h2>\n<pre class=\"dl-tutorial-code\"><code>\/* Experiment: Borders, Radius, and Shadows *\/\n.practice-8 {\n  padding: 1rem;\n  border: 2px solid #2563eb;\n  border-radius: 0.75rem;\n}<\/code><\/pre>\n<p>This second example is a practice scaffold. It is not a replacement for the main example; combine the ideas to make a small working page or script.<\/p>\n<h2>Common mistakes and best practices<\/h2>\n<ul>\n<li>Use responsive units and test layouts on narrow screens.<\/li>\n<li>Inspect computed styles in Developer Tools when a rule seems ignored.<\/li>\n<li>Do not copy examples without understanding the result; inspect and test them.<\/li>\n<li>Prefer clear, descriptive names and simple code over unnecessary complexity.<\/li>\n<\/ul>\n<h2>Hands-on exercise<\/h2>\n<p><strong>Your task:<\/strong> Style a course card with a soft border and shadow.<\/p>\n<p><strong>Extra challenge:<\/strong> Improve the example for a real DevLearn student portfolio or small business website. Explain your changes in two sentences.<\/p>\n<details class=\"dl-solution\">\n<summary>Show exercise guidance<\/summary>\n<p>Apply the example rule to a test element, change the relevant property, and compare its appearance at desktop and mobile widths.<\/p>\n<\/details>\n<h2>Quick knowledge check<\/h2>\n<ol>\n<li>What problem does borders, radius, and shadows solve?<\/li>\n<li>Which part of the main code example would you modify first?<\/li>\n<li>How would you test that your change works?<\/li>\n<\/ol>\n<details class=\"dl-solution\">\n<summary>Suggested answers<\/summary>\n<p>Use subtle shadows for depth and keep focus outlines visible for keyboard users. The relevant part depends on your change; test by running the code and inspecting the result using the browser and its developer tools.<\/p>\n<\/details>\n<h2>Next steps<\/h2>\n<p>Complete the exercise without copying the solution. Save your code in a folder named <code>css-lesson-08<\/code>, then continue to the next lesson in this track.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Borders define edges, border-radius rounds corners, and box-shadow adds depth. 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