求助：about div与arrow wrapper 2 div间的异常间隙问题

Hey there! Let's work through your two issues step by step—fixing that unexpected gap between your about div and arrow wrapper 2 div, and getting your arrow pinned to the bottom of the about section without breaking your layout.

1. Troubleshooting the Gap Between about and arrow wrapper 2 #

The most common culprits here are margin collapse, default browser styles, or invisible whitespace in your HTML:

• Margin collapse: Vertical margins on block elements often collapse into a single gap instead of stacking. If your about div has a bottom margin or arrow wrapper 2 has a top margin, try replacing one of them with padding, or add overflow: hidden to their immediate parent container to stop the collapse.
• Default browser styles: Browsers add tiny default margins/padding to elements like body or divs. Zero these out for your target elements directly:

  .about, .arrow-wrapper-2 {
    margin: 0;
    padding: 0;
  }
  

• Whitespace in HTML: Sometimes line breaks or spaces between divs in your markup create invisible gaps. Try removing extra spaces between the two divs, or set font-size: 0 on their parent container to eliminate this issue.

2. Pinning the Arrow to the Bottom of about (No Absolute Positioning Needed) #

Flexbox is your best bet here—it lets you align elements without disrupting the normal layout flow. Here's how to set it up:

• First, make your about div a flex container with column direction, and ensure it takes at least the full viewport height (use min-height instead of height so it grows if content is longer than the screen):

  .about {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    /* Keep your existing styles like background, padding here */
  }
  

• Wrap all your main about content in a child container (e.g., .about-content) and give it flex-grow: 1. This makes the content take up all available space in the about div, pushing the arrow wrapper down to the bottom:

  .about-content {
    flex-grow: 1;
  }
  

• Your HTML structure will look like this:

  <div class="about">
    <div class="about-content">
      <!-- All your about section text, images, etc. go here -->
    </div>
    <div class="arrow-wrapper-2">
      <!-- Your arrow icon/element -->
    </div>
  </div>
  

• If your about div still isn't taking full viewport height, check your html and body styles—they need to have their default margins removed and a minimum height set:

  html, body {
    margin: 0;
    min-height: 100vh;
  }
  

This ensures the parent chain has a defined height for the about div to inherit from.

内容的提问来源于stack exchange，提问作者Jakub Orzeg-Wydra