<html><head> <meta charset="utf-8"> <title>蝴蝶教程（cainiaoya.com）</title> <style> div.relative { position: relative; width: 400px; height: 200px; border: 3px solid #73AD21; } div.absolute { position: absolute; top: 80px; right: 0; width: 200px; height: 100px; border: 3px solid #73AD21; } </style></head><body><h2>position: absolute;</h2><p>position:absolute;的元素; 相对于最近定位的祖先定位（而不是相对于视口定位，如fixed）：</p><div class="relative">这个div元素有 position: relative; <div class="absolute">这个div元素有 position: absolute;</div></div></body></html>