* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Segoe UI', Roboto, system-ui, sans-serif;
    background: #f5f5f7;
    color: #1e293b;
    line-height: 1.5;
    padding: 20px;
}
button, input, select {
    font-family: inherit;
    font-size: 100%;
}