美术馆里的灯光效果

<style>
    body {
        background: #ce8f3e;
        display: flex;
        flex-direction: row;
        flex-wrap: wrap;
    }
    
    section {
        position: relative;
        width: 450px;
        height: 345px;
        flex: 0 0 450px;
    }
    
    section .switch {
        display: none;
    }
    
    section .lamp {
        position: absolute;
        width: 100%;
        height: 100%;