说明:本文档兼容性测试基础环境为:windows系统;IE6-10, Firefox4-25, Chrome4-31, Win Safari5.1.7, Opera9.5-18
border-top-style:<border-style>
<border-style> = none | hidden | dotted | dashed | solid | double | groove | ridge | inset | outset
默认值:none
适用于:所有元素
继承性:无
动画性:否
计算值:指定值
相关属性:[ border-style ] || [ border-right-style ] || [ border-bottom-style ] || [ border-left-style ]