用户名:"text" name="username" id="" placeholder="请输入" required="required" > 密码:"password" name="password" id="" required="required" placeholder="你输入"> 邮箱:"text" name="email" id="" required="required" placeholder="请输入"> 年龄:"text" name="age" id="" placeholder="输入"> 性别:"radio" name="sex" id="" value="1">男"radio" name="sex" id="" value="2">女"radio" name="sex" id="" value="3" checked="checked">保密 兴趣爱好: "checkbox" name="fav[]" id="" value="1" checked="checked" />PHP"checkbox" name="fav[]" id="" value="2" checked="checked" />PHP"email" placeholder="2306613258@qq.com">
年龄"number" min="1" max="3" value="1">"submit" name="" value="reg">
问题：怎么显示input[type=“number”]:out-of-range
{
border: 1px solid yellow;
}呢
?在里面填写即可，不要按
