做了个输入框样式，如图：

CSS代码如下：

#button {
    cursor:pointer;
    width:30%;
    margin:5px;
    padding:8px;
    border-radius:4px 4px 4px 4px;
    font-size:14px;
    font-weight:bold;
}
input{
	transition:all 0.30s ease-in-out;
	-webkit-transition: all 0.30s ease-in-out;
	-moz-transition: all 0.30s ease-in-out;
	
	border:#364f86 1px solid;
	border-radius:3px;
	outline:none;
}
input:focus{
	box-shadow:0 0 5px rgba(81, 203, 238, 1);
	-webkit-box-shadow:0 0 5px rgba(81, 203, 238, 1);
	-moz-box-shadow:0 0 5px rgba(81, 203, 238, 1);
}
textarea{
	transition:all 0.30s ease-in-out;
	-webkit-transition: all 0.30s ease-in-out;
	-moz-transition: all 0.30s ease-in-out;
	
	border:#364f86 1px solid;
	border-radius:3px;
	outline:none;
}
textarea:focus{
	box-shadow:0 0 5px rgba(81, 203, 238, 1);
	-webkit-box-shadow:0 0 5px rgba(81, 203, 238, 1);
	-moz-box-shadow:0 0 5px rgba(81, 203, 238, 1);
}

<table>               
                <tr>
                    <td>用户名</td>
                    <td><input name="username" type="text" id="username" placeholder="用户名"  style="height:25px"></input>*</td>
                </tr>
                              
                <tr>
                    <td>联系方式</td>
                    <td><input name="contact" type="text" id="contact" placeholder="电话或邮件地址"  style="height:25px"></input>*</td>
                </tr>

                <tr>
                    <td>意见及建议</td>
                    <td><textarea name="comment" id="comment" rows="9" cols="112" ></textarea></td>
                </tr>               
			    
			    <tr>
				<td colspan="2"align="center"><input type="submit" id="button" value=http://www.mamicode.com/"提交" />>

CSS3提交意见输入框样式