1.按钮样式的修改

/* 修改button按钮default样式  */
button{
  color: #fff;
  font-size: 16px;
  /* background-color:#1296DB;  */
  background-color: rgba(18, 150, 219, 0.6)
}
button::after{
  border: none;
}

1-2，按钮如果不是默认，用别的。可以点击查看都有什么样式属性，重写

button{
  xxxxxxx
}
button[plain]{
  /* border: 1px solid #ddd;
  color: red; */
}

2.轮播图里的滑块改变

<swiper class="swiper-box" indicator-dots="{{ indicatordots }}" autoplay="{{ autoplay }}">
    <block wx:for="{{ swiperItem }}">
        <swiper-item>
            <navigator url="{{ item.linkUrl }}">
                <image class="slide-image" src="{{ item.imgUrl }}"></image>
            </navigator>
        </swiper-item>
    </block>
</swiper>
 
	
// wxss 
.swiper-box .wx-swiper-dots.wx-swiper-dots-horizontal{
     margin-bottom: 2rpx;
}
.swiper-box .wx-swiper-dot{
    width:40rpx;
    display: inline-flex;
    height: 10rpx;
    margin-left: 20rpx;
    justify-content:space-between;
}
.swiper-box .wx-swiper-dot::before{
    content: '';
    flex-grow: 1; 
    background: rgba(255,255,255,0.8);
    border-radius: 8rpx
}
.swiper-box .wx-swiper-dot-active::before{
    background:rgba(244,0,0,0.8);   
}

3.input 表单的placeholder

官方文档：https://developers.weixin.qq.com/miniprogram/dev/component/input.html

<input class='tel' name='tel' placeholder='您的电话' style='width:100%' placeholder-class='inputPlace'></input>

wxss

.inputPlace{
  color: #ddd;
  font-size: 14px;
}