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

body {
    display: flex;
    flex-direction: column;
    font-family: sans-serif;
    gap: 20px;
    justify-content: center;
    align-items: center;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

input {
    padding: 8px 10px;
    border: 2px solid black;
}

input:focus {
    outline: none;
}

input:in-range {
    background-color: rgba(0, 255, 0, 0.25);
}

input[type="number"]:out-of-range {
    background-color: rgba(255, 0, 0, 0.25);
    border: 2px solid red;
}