body {
    margin: 0;
    font-family: system-ui, sans-serif;
    background: #111;
    color: #eee;
}

main {
    max-width: 600px;
    margin: auto;
    padding: 24px;
}

header {
    margin-bottom: 40px;
}

#time {
    font-size: 4rem;
    font-weight: 700;
}

#date {
    font-size: 1.2rem;
    color: #aaa;
}

section {
    margin-bottom: 30px;
}

h2 {
    font-size: 1rem;
    text-transform: uppercase;
    color: #aaa;
}

.card {
    background: #222;
    padding: 18px;
    border-radius: 14px;
}

button {
    padding: 10px 14px;
    border: 0;
    border-radius: 10px;
    font: inherit;
}

.task {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}