摘要:
<style> div{ width: 200px; height: 35px; border: 2px solid gray; /*父相*/ position: relative; } span{ /*子绝:相对于父元素进行绝对定位*/ position: absolute; top: 3px; 阅读全文
摘要:
<!DOCTYPE html> <html lang="ch"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>transform 阅读全文