body {
    font-family: Arial, sans-serif;
    background-color: #f0f4f8;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding-top: 2rem;
}

.tracker-container {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    width: 300px;
    text-align: center;
}

input, button {
    width: 100%;
    padding: 0.5rem;
    margin: 0.5rem 0;
    border-radius: 5px;
    border: 1px solid #ccc;
}

button {
    background-color: #1f2937;
    color: white;
    border: none;
    cursor: pointer;
}

ul {
    list-style: none;
    padding: 0;
}

li {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem;
    border-bottom: 1px solid #ddd;
}

li button {
    background: red;
    border: none;
    color: white;
    border-radius: 5px;
    cursor: pointer;
}