body,html {
    background-color: black;
    text-align: center;
    font-family: Courier, monospace;
}

h1,h4,h3,p {
    color: green;
}

.bar {
    display: flex;
    justify-content: center; 
    align-items: center;    
    gap: 1rem;
    padding: 1rem 2rem;
    background: linear-gradient(.1deg, green, black);
}

button {
    background-color: grey; 
    border: none;
    cursor: pointer; 
}