*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
body {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #f0f2f5;
}