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    <p>In CSS, the symbols you mention are:</p> <ul> <li><code>&gt;</code> is the the child combinator;</li> <li><code>+</code> is the adjacent sibling combinator;</li> <li><code>~</code> is the general sibling combinator.</li> </ul> <p>The difference between them is this:</p> <p><code>#store &gt; .shoppingCart { background-color: red; }</code></p> <pre><code>&lt;div class=shoppingCart&gt;This will not be targeted&lt;/div&gt; &lt;div id=store&gt; &lt;div class=shoppingCart&gt;This WILL be targeted&lt;/div&gt; &lt;div class=shoppingCart&gt;This WILL ALSO be targeted&lt;/div&gt; &lt;div class=inner&gt; &lt;div class=shoppingCart&gt;This will not be targeted&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;div class=shoppingCart&gt;This will not be targeted either&lt;/div&gt; &lt;div class=shoppingCart&gt;Neither will this&lt;/div&gt; </code></pre> <p>The <code>&gt;</code> combinator selects only direct child elements (elements directly underneath the first one) of the selector specified, so, in this case, only the one immediately underneath <code>#store</code>.</p> <p><code>#store + .shoppingCart { background-color: red; }</code></p> <pre><code>&lt;div class=shoppingCart&gt;This will not be targeted&lt;/div&gt; &lt;div id=store&gt; &lt;div class=shoppingCart&gt;This will not be targeted&lt;/div&gt; &lt;div class=shoppingCart&gt;This will not be targeted either&lt;/div&gt; &lt;div class=inner&gt; &lt;div class=shoppingCart&gt;This will not be targeted either&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;div class=shoppingCart&gt;This WILL be targeted&lt;/div&gt; &lt;div class=shoppingCart&gt;But this one won't be&lt;/div&gt; </code></pre> <p>The <code>+</code> combinator selects an element that is the immediate next sibling (elements that are on the same level, ie. next to one another) of the first element, so if there is a <code>.shoppingCart</code> that is a sibling after a <code>#store</code>, it will be selected - but only if that element is AFTER the first one; a previous sibling cannot be selected in this way.</p> <p><code>#store ~ .shoppingCart { background-color: red; }</code></p> <pre><code>&lt;div class=shoppingCart&gt;This will not be targeted&lt;/div&gt; &lt;div id=store&gt; &lt;div class=shoppingCart&gt;This will not be targeted&lt;/div&gt; &lt;div class=shoppingCart&gt;This will not be targeted either&lt;/div&gt; &lt;div class=inner&gt; &lt;div class=shoppingCart&gt;This will not be targeted either&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;div class=shoppingCart&gt;This WILL be targeted&lt;/div&gt; &lt;div class=shoppingCart&gt;This WILL be targeted as well&lt;/div&gt; </code></pre> <p>The <code>~</code> combinator selects an element that is any following sibling of the first element, so if there is a <code>.shoppingCart</code> that follows as a sibling of <code>#store</code>, it will be selected.</p>
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    1. USAdam Hepton
    1. USAdam Hepton
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    1. COYour definitions of `+` and `~` are not quite correct: both only target siblings that come *after* the element selected by the first part of the combinator; the difference between the two is that `+` only selects the immediate next element (if it matches) whereas `~` selects any next elements (immediate or otherwise). There are no combinators to select arbitrary (previous or next) kinds of siblings.
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      1. USRaphael Schweikert
    2. COYou're absolutely right, of course. I don't know what I was thinking. Thanks.
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