<template>
<view id="div0">
<view>1</view>
<view>2</view>
<view>3</view>
</view>
</template>
<style>
#div0{
display: flex;
}
#div0 view:first-child{
background-color: #F0AD4E;
flex: 0 0 50px;
}
#div0 view:nth-child(2){
background-color: #FFFFFF;
flex: 1 1 auto;
}
#div0 view:nth-child(3){
background-color: #F0AD4E;
flex: 0 0 50px;
}
@media (min-device-width:300px) and (min-device-width:400px){
#div0 view:nth-child(2){
background-color: #007AFF
}
}
@media (min-device-width:401px) and (min-device-width:600px){
#div0 view:nth-child(2){
background-color:#4CD964
}
}
</style>