浏览器兼容问题

//修改input输入框placeholder颜色不一致
/* WebKit browsers */
	 	#discribe::-webkit-input-placeholder{
			color:#BABABA;
			padding-top:4%;
		}
		/* Mozilla Firefox 4 to 18 */
		#discribe:-moz-placeholder {
		  color: #BABABA ;
		  padding-top:4%;
		}
		/* Mozilla Firefox 19+ */
		#discribe::-moz-placeholder{
		  color: #BABABA !important;
		  padding-top:4%;
		}
		/* Internet Explorer 10+ */
		#discribe:-ms-input-placeholder {
		  color:#BABABA;
		  padding-top:4%;
		}

//去掉火狐必选项红色边框
<style>
input[required]:invalid,
input:focus:invalid,
textarea[required]:invalid,
textarea:focus:invalid{box-shadow: none;}
</style>