Joke Collection Website - Mood Talk - Help! How does space make this piece transparent?

Help! How does space make this piece transparent?

Step 1: Download the QQ space of mobile phone and click Enter.

Step 2: After entering QQ space, select from the following three options and click Enter My Space.

Step 3: Enter My Space and click "Settings" in the upper left corner.

Step 4: Enter "Settings" and click "Personalize".

Step 5: Click "Backstage Mall" in the options after entering "Personalization".

Step 6: After entering the "Background Mall", slide in the "Features" column to find the "Latest Full Screen Background"

Step 7: Select your favorite full-screen background preview after entering.

Step 8: After previewing the effect, adjust the "Transparency" to make it transparent and click "Use".