body {
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
    margin: 0;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 20px;
}

h1 {
    margin: 0;
}

form {
    background: white;
    padding: 15px;
    border-radius: 5px;
    max-width: 300px;
    margin: 0 auto 20px auto;
    box-shadow: 0 0 5px rgba(0,0,0,0.1);
}

label {
    font-weight: bold;
}

input {
    width: 100%;
    padding: 6px;
    margin-bottom: 10px;
    box-sizing: border-box;
}

button {
    padding: 8px 12px;
    cursor: pointer;
}

#entries {
    background: white;
    padding: 15px;
    border-radius: 5px;
    max-width: 400px;
    margin: 20px auto;
    box-shadow: 0 0 5px rgba(0,0,0,0.1);
}