求助：CSS Grid Critters 9.3底部网格项对齐问题解决方法

Let's break down what's causing your bottom row alignment issue and fix it without messing up the top row:

First, let's look at your current grid setup:

• You're using grid-template-rows: 50% auto which can behave unpredictably if the planet container doesn't have an explicit height—50% of an undefined height won't allocate space as you expect.
• justify-items: end applies right-alignment to all grid items by default, which is likely why your bottom row elements aren't sitting where you want them.

Solution: Target Bottom Row Elements with justify-self #

Instead of modifying the global justify-items or breaking the top row by styling dunes/water directly, override the alignment only for the bottom row items using justify-self—this lets you keep the top row's alignment intact while fixing the bottom:

planet {
  display: grid;
  grid-template-columns: auto auto;
  grid-template-rows: 1fr auto; /* Swap 50% for 1fr to let the top row fill available space reliably */
  justify-content: space-evenly;
  justify-items: end; /* Keep top row aligned to the end */
  align-content: space-between;
  height: 100%; /* Ensure the grid container has a defined height for row calculations */
}

/* Override alignment only for bottom row elements */
dunes, water {
  justify-self: start; /* Adjust to center/end based on the challenge's requirements */
}

Why This Works: #

• 1fr in grid-template-rows lets the top row take up all remaining space in the container, while auto makes the bottom row fit its content perfectly—this is more flexible than a fixed 50% for dynamic layouts.
• Adding height: 100% to planet gives the grid a clear reference point to calculate row heights correctly.
• justify-self targets individual grid items, so you can align the bottom row elements without disrupting the top row's end alignment.

If You Need to Keep the 50% Top Row Height: #

If the challenge explicitly requires a 50% height for the top row, make sure the planet container has a fixed or explicit height (e.g., height: 200px or height: 100vh). Then keep the justify-self override for dunes/water to fix the bottom row alignment.

内容的提问来源于stack exchange，提问作者Dani Amsalem