u013108007的博客

<style> .switch-wrapper{ display: block; right: 68px; border-radius: 2px; text-align: center; color: #36383c; cursor: pointer; padding: 4px 8px; ..

1.定位// 左右栏定宽 中间宽度自适应 <style> .left{ float: left; width: 300px; height: 300px; background-color: red; } .right{ float: right; width: 300px;