page的高度设置100vh 然后分3块  加起来等于100vh即可 如下代码

<view class=“div1”></view>

<view class=“div2”></view>

<view class=“div3”></view>

page {height: 100vh; }

view {background: #eee; }

.div1 {height: 20vh; background: red; }

.div2 {height: 70vh; }

.div3 {height: 10vh; background: orange; }