body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: #f4f4f4;
}
.container {
    background: white;
    padding: 50px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    width: 400px;
    text-align: center;
}
.input-section {
    display: flex;
    justify-content: space-between;
}
input {
    flex: 1;
    padding: 5px;
}
button {
    margin-left: 5px;
    padding: 15px 20px;
    cursor: pointer;
    background: blue;
    color: white;
    border: none;
    border-radius: 6px;
}
ul {
    list-style: none;
    padding: 0;
}
li {
    background: #eee;
    margin: 5px 0;
    padding: 5px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
li button {
    background: red;
    color: white;
    border: none;
    cursor: pointer;
}