<!--style的优先级比class高会覆盖和class相同属性-->
<view class="inputView" style="margin-top: 40% ">
<input class="input" type="number" placeholder="请输入账号" placeholder-style="color: red" bindinput="listenerPhoneInput" />
</view>

<view class="inputView">
<input class="input" password="true" placeholder="请输入密码" placeholder-style="color: red" bindinput="listenerPasswordInput"/>
</view>


<button style="margin-left: 15rpx; margin-right: 15rpx; margin-top: 50rpx; border-radius: 40rpx" type="primary" bindtap="listenerLogin">登录</button>

Page({
 /**
 * 初始化数据
 */
 data:{
 phone: '',
 password: '',
 },

 /**
 * 监听手机号输入
 */
 listenerPhoneInput: function(e) {
  this.data.phone = e.detail.value;

 },

 /**
 * 监听密码输入
 */
 listenerPasswordInput: function(e) {
  this.data.password = e.detail.value;
 },

 /**
 * 监听登录按钮
 */
 listenerLogin: function() {
  //打印收入账号和密码
 console.log('手机号为: ', this.data.phone);
 console.log('密码为: ', this.data.password);
 },

 onLoad:function(options){
 // 页面初始化 options为页面跳转所带来的参数
 },
 onReady:function(){
 // 页面渲染完成
 },
 onShow:function(){
 // 页面显示
 },
 onHide:function(){
 // 页面隐藏
 },
 onUnload:function(){
 // 页面关闭
 }
})

.input{
 padding-left: 10px;
 height: 44px;
}

.inputView{
 border: 2px solid red;
 border-radius: 40px;
 margin-left: 15px;
 margin-right: 15px;
 margin-top: 15px;
}