เสร็จแย้ววววว <3
✨ SUPACHAI KHEAWJUY
<html> <head> <title>Let's Start </title> <style> .box{ width: 100px; height: 100px; margin: 5px; } .box:nth-child(1){ background: red; } .box:nth-child(2){ background: red; } .box:nth-child(3){ background: blue; } .box:nth-child(4){ background: blue; } .box:nth-child(5){ background: blue; } </style> </head> <body> <div class="box"></div> <div class="box"></div> <div class="box"></div> <div class="box"></div> <div class="box"></div> </body> </html>