CSS的常用样式分为几大类: 字体样式(font,color, text-decoration ,text-shadow) 元素样式(width,height,margin,padding,opacity,盒子模型) 边框样式(border , border-radius , box-shadow) 段落样式( line-height , text-align , text-indent , letter-spacing ) 背景样式( background , background-size…