图片透明度属性：opacity

背景图片重复属性：background-repeat 背景图片位置属性：background-position                  background-postion:横坐标 纵坐标;                  background-postion:left center;                  background-postion:left top;                  background-postion:left bottom;

背景图片区域属性：background-origin: border | padding | content 背景图片大小属性：background-size 背景图片显示属性：background-attachment:scroll | fixed   /* 规定图片是固定还是随页面滑动(默认固定)*/

背景图片裁剪区域：background-clip: border-box | padding-box | content-box | no-clip 背景复合属性： background: 背景颜色 背景图片 是否重复 图片位置 图片滚动; {background: background-color background-image background-repeat background-attachment              background-position background-size background-clip background-origin} 边框复合属性 边框样式：{border-style: border-top-style border-right-style border-bottom-style border-left-style} 边框颜色：{border-color: border-top-color border-right-color border-bottom-color border-left-color} 边框线宽：{border-width: border-top-width border-right-width border-bottom-width border-left-width} 边框复合：{border: border-width border-style border-color} 圆角边框属性：border-radius: none　| length 两个圆角半径：border-radius: length/length border-radius衍生属性: border-top-right-radius border-bottom-right-radius border-top-left-radius border-bottom-left-radius 图片边框 {border-imgage: image (number | percentage) (stretch | repeat | round);}