摘要:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="wi 阅读全文
摘要:
1.盒子模型 (1)边框(border) 粗细 样式 颜色 语法:border:border-width || border-style || border-color solid 实线边框 dashed 虚线边框 dotted 点线边框 边框简写:border:1px solid red ;没有顺 阅读全文