style.css

body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 20px;
    box-sizing: border-box;
}
.container {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    padding: 20px;
    width: 100%;
    max-width: 400px;
}
h1 {
    text-align: center;
    color: #333;
}
form {
    display: flex;
    margin-bottom: 20px;
}
input[type="text"] {
    flex-grow: 1;
    padding: 10px;
    font-size: 16px;
    border: 1px solid #ddd;
    border-radius: 4px 0 0 4px;
}
button {
    padding: 10px 15px;
    font-size: 16px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
    transition: background-color 0.3s;
}
button:hover {
    background-color: #45a049;
}
ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
}
li {
    background-color: #f9f9f9;
    margin-bottom: 8px;
    padding: 10px;
    border-radius: 4px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.delete-btn {
    background-color: #f44336;
    color: white;
    border: none;
    padding: 5px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}
.delete-btn:hover {
    background-color: #d32f2f;
}
.task-text {
    word-break: break-word;
    max-width: calc(100% - 70px);
}
.error-message {
    color: red;
    margin-bottom: 10px;
}
.success-message {
    color: green;
    margin-bottom: 10px;
}