样式如上：

input {
      color:#333;    line-height:normal;    font-family:"Microsoft YaHei",Tahoma,Verdana,SimSun;    font-style:normal;    font-variant:normal;    font-size-adjust:none;    font-stretch:normal;    font-weight:normal;    margin-top:0px;    margin-bottom:0px;    margin-left:0px;    padding-top:4px;    padding-right:4px;    padding-bottom:4px;    padding-left:4px;    font-size:15px;    outline-width:medium;    outline-style:none;    outline-color:invert;    border-top-left-radius:3px;    border-top-right-radius:3px;    border-bottom-left-radius:3px;    border-bottom-right-radius:3px;    text-shadow:0px 1px 2px #fff;    background-attachment:scroll;    background-repeat:repeat-x;    background-position-x:left;    background-position-y:top;    background-size:auto;    background-origin:padding-box;    background-clip:border-box;    background-color:rgb(255,255,255);    margin-right:8px;    border-top-color:#ccc;    border-right-color:#ccc;    border-bottom-color:#ccc;    border-left-color:#ccc;    border-top-width:1px;    border-right-width:1px;    border-bottom-width:1px;    border-left-width:1px;    border-top-style:solid;    border-right-style:solid;    border-bottom-style:solid;    border-left-style:solid;}