下面的CSS编码加上到您的款式表时,将删掉锚标识,按钮,文档提交的虚线
a:focus, a:active,
button::-moz-focus-inner,
input[type="reset"]::-moz-focus-inner,
input[type="button"]::-moz-focus-inner,
input[type="submit"]::-moz-focus-inner,
select::-moz-focus-inner,
input[type="file"] > input[type="button"]::-moz-focus-inner {
border: 0;
outline : 0;
}