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ccsunny
ccsunny

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Why does my flex box become LCP Element only with Text

#webdev #performance #website

Why did this div become an LCP (Largest Contentful Paint) element? 

<div class="flex gap-1 body-m"> <span class="cursor-pointer">Login</span> or <span class="cursor-pointer">Register Now</span> </div>
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Text Block Calculation

  • LCP considers text blocks as a single unit when they're within a block-level container
  • This div contains all the text: "Login or Register Now" as one block
  • Even though individual span elements are smaller, they're calculated together

Solutions if you don't want this element as LCP:

  • Use inline element: 
<span class="flex gap-1"> <!-- content --> </span>
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  • Force other elements to be LCP: 
<!-- Ensure logo or hero image is larger and loads faster --> <img src="logo.png" alt="Logo" fetchpriority="high" />
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  • Adjust display mode: 
<main> <h1 class="main-title"><!-- larger text content --></h1> <!-- login/register prompt --> </main>
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Best practices:

  • Specify your intended LCP element (usually a logo, hero image, or main title)
  • Ensure priority loading for that element
  • Use inline elements or limit size for secondary text content

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