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authorBradley Taunt <bt@btxx.org>2024-06-06 08:05:12 -0400
committerBradley Taunt <bt@btxx.org>2024-06-06 08:05:12 -0400
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+ <title>Super Mario Blocks in CSS</title>
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+<main>
+<h1>Super Mario Blocks in CSS</h1>
+<p>2019-02-15</p>
+<p>Just because we can, let's make a quick demo on how to build interactive elements based off the original Mario punch blocks.</p>
+<p>What our final product will look like:</p>
+<p><img src="/public/images/mario-block.png" alt="Mario blocks cretaed with CSS" /></p>
+<p><a href="https://codepen.io/bradleytaunt/pen/JjEPOVe">Live CodePen Example</a></p>
+<h2>The HTML</h2>
+<p>The set of Mario blocks doesn't require a huge amount of effort for it's <code>html</code> structure, we only need:</p>
+<ul>
+<li>Parent div for each block</li>
+<li>Checkbox input</li>
+<li>Checkbox label</li>
+<li>Inner label divs to represent the block "dots"</li>
+</ul>
+<p><strong>Sidenote</strong>: This is only how <em>I</em> chose to add the inner dots to the Mario blocks. There are many other ways to create these, so please feel free to implement them however you see fit.</p>
+<pre><code>&lt;!-- Main parent block --&gt;
+&lt;div class=&quot;mario-block&quot;&gt;
+
+ &lt;!-- Checkbox input (disabled by default) --&gt;
+ &lt;input type=&quot;checkbox&quot; id=&quot;1&quot; disabled&gt;
+
+ &lt;!-- Checkbox label --&gt;
+ &lt;label for=&quot;1&quot;&gt;
+ &lt;!-- Inner dots for blocks --&gt;
+ &lt;div class=&quot;dot&quot;&gt;&lt;/div&gt;
+ &lt;div class=&quot;dot&quot;&gt;&lt;/div&gt;
+ &lt;div class=&quot;dot&quot;&gt;&lt;/div&gt;
+ &lt;div class=&quot;dot&quot;&gt;&lt;/div&gt;
+ &lt;/label&gt;
+
+&lt;/div&gt;
+</code></pre>
+<p>Now we just add as many default blocks we want, along with the interactive punch block (<code>.mario-block--question</code>):</p>
+<pre><code>&lt;div class=&quot;mario-block&quot;&gt;
+ &lt;input type=&quot;checkbox&quot; id=&quot;1&quot; disabled&gt;
+ &lt;label for=&quot;1&quot;&gt;
+ &lt;div class=&quot;dot&quot;&gt;&lt;/div&gt;
+ &lt;div class=&quot;dot&quot;&gt;&lt;/div&gt;
+ &lt;div class=&quot;dot&quot;&gt;&lt;/div&gt;
+ &lt;div class=&quot;dot&quot;&gt;&lt;/div&gt;
+ &lt;/label&gt;
+&lt;/div&gt;
+
+&lt;div class=&quot;mario-block&quot;&gt;
+ &lt;input type=&quot;checkbox&quot; id=&quot;2&quot; disabled&gt;
+ &lt;label for=&quot;2&quot;&gt;
+ &lt;div class=&quot;dot&quot;&gt;&lt;/div&gt;
+ &lt;div class=&quot;dot&quot;&gt;&lt;/div&gt;
+ &lt;div class=&quot;dot&quot;&gt;&lt;/div&gt;
+ &lt;div class=&quot;dot&quot;&gt;&lt;/div&gt;
+ &lt;/label&gt;
+&lt;/div&gt;
+
+&lt;div class=&quot;mario-block mario-block--question&quot;&gt;
+ &lt;input type=&quot;checkbox&quot; id=&quot;3&quot;&gt;
+ &lt;label for=&quot;3&quot;&gt;
+ &lt;div class=&quot;dot&quot;&gt;&lt;/div&gt;
+ &lt;div class=&quot;dot&quot;&gt;&lt;/div&gt;
+ &lt;div class=&quot;dot&quot;&gt;&lt;/div&gt;
+ &lt;div class=&quot;dot&quot;&gt;&lt;/div&gt;
+ &lt;div class=&quot;question-mark&quot;&gt;&lt;/div&gt;
+ &lt;/label&gt;
+&lt;/div&gt;
+
+&lt;div class=&quot;mario-block&quot;&gt;
+ &lt;input type=&quot;checkbox&quot; id=&quot;4&quot; disabled&gt;
+ &lt;label for=&quot;4&quot;&gt;
+ &lt;div class=&quot;dot&quot;&gt;&lt;/div&gt;
+ &lt;div class=&quot;dot&quot;&gt;&lt;/div&gt;
+ &lt;div class=&quot;dot&quot;&gt;&lt;/div&gt;
+ &lt;div class=&quot;dot&quot;&gt;&lt;/div&gt;
+ &lt;/label&gt;
+&lt;/div&gt;
+</code></pre>
+<h2>The CSS</h2>
+<p>First we need to remove the default <code>checkbox</code> input styling and place all new styling on it's corresponding <code>label</code>.</p>
+<pre><code>/* Mario block parent div */
+.mario-block {
+ display: inline-block;
+ height: 80px;
+ margin-right: -7px; /* Fixes inline-block margin bug */
+ position: relative;
+ width: 80px;
+}
+
+/* Hide default checkbox input */
+.mario-block input {
+ position: absolute;
+ visibility: hidden;
+ z-index: -1;
+}
+</code></pre>
+<p>Now to target the <code>label</code> elements found inside the block:</p>
+<pre><code>/* Style checkbox label accordingly */
+.mario-block label {
+ background: #F88D2E;
+ border: 4px solid #070000;
+ box-shadow: inset -4px -4px 0 #965117, inset 4px 4px 0 #FAB89B;
+ display: block;
+ height: 100%;
+ position: relative;
+ width: 100%;
+}
+</code></pre>
+<p>Next we style our included <code>.dots</code> elements to be placed in the four corners of each block:</p>
+<pre><code>.mario-block .dot {
+ background: #070000;
+ height: 5px;
+ position: absolute;
+ width: 5px;
+}
+.mario-block .dot:nth-child(1) {
+ left: 4px;
+ top: 4px;
+}
+.mario-block .dot:nth-child(2) {
+ right: 4px;
+ top: 4px;
+}
+.mario-block .dot:nth-child(3) {
+ bottom: 4px;
+ left: 4px;
+}
+.mario-block .dot:nth-child(4) {
+ bottom: 4px;
+ right: 4px;
+}
+</code></pre>
+<h3>Punch-able block</h3>
+<p>Now we need to include the "question mark" SVG and custom CSS for the interactive Mario block. You can <a href="/public/images/mario-block-question-mark.svg">download a copy</a> of the custom <code>svg</code> question mark I created.</p>
+<pre><code>.mario-block--question label {
+ cursor: pointer;
+}
+.mario-block--question .question-mark {
+ background-image: url('/public/images/mario-block-question-mark.svg');
+ background-position: center;
+ background-repeat: no-repeat;
+ background-size: 40px;
+ bottom: 0;
+ left: 0;
+ position: absolute;
+ right: 0;
+ top: 0;
+ z-index: 1;
+}
+</code></pre>
+<h3>The last piece</h3>
+<p>The last item we need to design is the <code>checked</code> state of the interactive question mark block. The extra inner dark dashes will be added as <code>pseudo</code> elements:</p>
+<pre><code>/* Mario block in `checked` state */
+.mario-block input:checked + label {
+ background: #885818;
+ box-shadow: inset -4px -4px 0 #68400B, inset 4px 4px 0 #FAB89B;
+}
+
+/* Hide both the default dots and question mark svg on checked */
+.mario-block input:checked + label .dot,
+.mario-block input:checked + label .question-mark {
+ display: none;
+}
+
+/* Shared pseudo element styling */
+.mario-block input:checked + label:before,
+.mario-block input:checked + label:after {
+ content: '';
+ height: 20px;
+ position: absolute;
+ transform: rotate(45deg);
+ width: 20px;
+}
+
+/* Right dash */
+.mario-block input:checked + label:before {
+ border-right: 4px solid #070000;
+ right: 18px;
+ top: 15px;
+ transform: rotate(45deg);
+}
+
+/* Left dash */
+.mario-block input:checked + label:after {
+ border-left: 4px solid #070000;
+ left: 18px;
+ top: 15px;
+ transform: rotate(-45deg);
+}
+</code></pre>
+<p>That's it!</p>
+<h2>Taking it further</h2>
+<p>As always, you can take this concept and flesh it out even further. I was trying to mimic the "pixel" style of the original Mario games, but you could make the lighting and depth more realistic with some extra subtle gradients or <code>filter</code> properties.</p>
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