手机APP上中下三层

代码如下：

<template>
    <div class="container" id="app">
        <header>
            <mu-appbar style=" 100%;" color="primary">
                <mu-button icon slot="left">
                    <mu-icon value="menu"></mu-icon>
                </mu-button>
                Title
                <mu-menu slot="right">
                    <mu-button flat>MENU</mu-button>
                    <mu-list slot="content">
                        <mu-list-item button>
                            <mu-list-item-content>
                                <mu-list-item-title>Menu Item 1</mu-list-item-title>
                            </mu-list-item-content>
                        </mu-list-item>
                        <mu-list-item button>
                            <mu-list-item-content>
                                <mu-list-item-title>Menu Item 2</mu-list-item-title>
                            </mu-list-item-content>
                        </mu-list-item>
                    </mu-list>
                </mu-menu>
            </mu-appbar>
        </header>
        <main>
            <p>主体</p>
            <p>主体11</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p>
            <p>主体</p></main>
        <footer>
            <mu-bottom-nav>
                <mu-bottom-nav-item title="Recents" icon="restore"></mu-bottom-nav-item>
                <mu-bottom-nav-item title="Favorites" icon="favorite"></mu-bottom-nav-item>
                <mu-bottom-nav-item title="Nearby" icon="location_on"></mu-bottom-nav-item>
            </mu-bottom-nav>
        </footer>
    </div>
</template>

<style lang="less">

    .container {
        display: flex;
        height: 100vh;
        margin: 0;
        padding: 0;
        flex-direction: column;
    }

    header .header {
        height: 100px;
    }

    header, footer {
        height: 70px;
    }

    main {
        flex-grow: 1;
        overflow: auto;
    }
</style>
<script>
    export default {
        name: 'lgoin',
    }
</script>

效果图如下：