/* * {
    margin: 2px;
    background:lightgrey;
}
h1 {
    background:gray;
    text-align: center;
}
div {
    background: darkgray;
    text-align: center;
}

ul {
    background:darkgray;
    
} */

body {
    font-family: Arial, sans-serif;
    background: #f4f4f4;
    margin: 0;
    padding: 0;
    justify-items: center;
}

.container {
    max-width: 400px;
    margin: 40px auto;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    padding: 24px 32px 32px 32px;
}

h1 {
    color: #333;
    margin-bottom: 24px;
    font-size: 2em;
    letter-spacing: 1px;
}
input[type="text"] {
    width: 40%;
    padding: 8px;
    border: 1px solid #bbb;
    border-radius: 4px;
    font-size: 1em;
    margin-right: 8px;
    outline: none;
    transition: border 0.2s;
}

input[type="text"]:focus {
    border-color: #888;
}

button, input[type="submit"] {
    padding: 8px 16px;
    background: #007bff;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 1em;
    cursor: pointer;
    transition: background 0.2s;
}

button:hover, input[type="submit"]:hover {
    background: #0056b3;
}

ul {
    list-style: none;
    padding: 0;
    margin-top: 24px;
}

li {
    background: #f9f9f9;
    margin-bottom: 10px;
    padding: 10px 16px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background 0.2s;
}

li.completed {
    text-decoration: line-through;
    color: #aaa;
    background: #e0e0e0;
}

li button {
    background: #dc3545;
    color: #fff;
    border: none;
    border-radius: 4px;
    padding: 4px 10px;
    font-size: 0.9em;
    cursor: pointer;
    margin-left: 8px;
    transition: background 0.2s;
}

li button:hover {
    background: #b52a37;
}
/* Add border to main container, input, button, and list items */
.container {
    border: 2px solid #007bff;
}

input[type="text"] {
    border: 2px solid #bbb;
}

button, input[type="submit"] {
    border: 2px solid #007bff;
}

ul {
    border: 1px solid #ddd;
}

li {
    border: 1px solid #ccc;
}