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

body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #111;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

.header {
    position: fixed;
    top: 3rem;
    color: #fff;
    outline: 1px solid #fff;
    padding: .4rem;
    font-size: 1.5rem;
}

.screen {
    position: relative;
    display: flex;
    justify-content: center;
    width: min(600px,70vw);
    height: min(550px,55vh);
    background-color: #000;
    border-radius: 1rem;
    outline: 2px solid #fff;
    overflow: hidden;
}

.star {
    position: absolute;
    background-color: #fff;
    border-radius: 50%;
}