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CSS selectors

    Simple Selectors

    • type selectors
    • universal selector (*)
    • attribute presence and value selectors
    • attribute substring selectors
    • class selectors
    • two classes (.c1.c2)
    • id selectors

    Pseudo-classes

    • :link
    • :visited
    • :hover
    • :active
    • :focus
    • :target
    • :lang
    • :enabled and :disabled
    • :checked
    • :root
    • :nth-child
    • :nth-of-type
    • :nth-child vs :nth-of-type
    • :nth-last-child
    • :nth-last-of-type
    • :first-child
    • :first-of-type
    • :last-child
    • :last-of-type
    • :only-child
    • :only-of-type
    • :empty
    • :not

    Pseudo-elements

    • ::first-line
    • ::first-letter
    • ::before and ::after
    • ::placeholder

    Combinators

    • child vs descendant selector
    • adjacent sibling selector (E1 + E2)
    • general sibling selector (E1 ~ E2)

    Specificity

    • Selector specificity
     
    • Home
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    CSS :only-child – define style if element if only child

    on Apr 9, 2016

    Css :only-child pseudo class represents an element that has a parent element and whose parent element has no other element children.

    Example – css :only-child

    Change background color of p tag if it is only child of its parent.

    <style type="text/css" media="screen">
    p:only-child {
      background-color:lightgreen;
    }
    </style>
    
    <div>
      <p>First div child p1</p>
    </div>
    <hr>
    <div>
      <div>2nd div child div1</div>
      <p>2nd div child p2</p>
    </div>
    refresh done
    try it online

    Related

    • Css :nth-child
    • CSS :nth-of-type
    • Css :nth-child vs :nth-of-type
    • CSS :nth-last-child
    • Css :first-child selector - first child element
    • Css :first-of-type selector - first child element of type
    • CSS :nth-last-of-type
    • Css :last-child selector - last child element
    • Css :last-of-type selector - last child element of type
    • CSS :only-of-type - define style of only child a type

    Specification

    • W3C CSS 3 :only-child pseudo class specification

    Suggested posts:

    1. CSS :nth-of-type
    2. CSS pseudo class :visited – style for visited links
    3. CSS ::before and ::after examples
    4. Css :last-child selector – last child element
    5. CSS class selectors – define style by class name
    6. PHP regex – word boundary examples
    7. CSS :not – negation pseudo-class
    8. CSS border radius and round corners examples
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    Posted in Tutorials | Tagged CSS, CSS Pseudo Classes, CSS selectors, CSS3, Tutorials
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