* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    min-height: 100vh;
    background-color: #f5f5f5;
}
.empty-data{
    width: 150px; height: 300px; margin: 0 auto; display: flex; align-items: center; justify-content: center; color: #999; font-size: 16px;
}