main.css

body {
    background-color: #f7f7f7;
    font-family: Arial, sans-serif;
  }
  
  .container {
    width: 500px;
    margin: 50px auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  }
  
  h1 {
    text-align: center;
    margin-top: 0;
  }
  
  input[type="text"] {
    width: 70%;
    padding: 10px;
    font-size: 16px;
    border-radius: 5px 0 0 5px;
    border: none;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  }
  
  button {
    padding: 10px;
    font-size: 16px;
    background-color: #4CAF50;
    color: #fff;
    border: none;
    border-radius: 0 5px 5px 0;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  }
  
  ul {
    list-style-type: none;
    padding: 0;
  }
  
  li {
    background-color: #fff;
    padding: 10px;
    margin-bottom: 5px;
    border-radius: 5px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    display: flex;
    justify-content: space-between;
  }
  
  li span {
    flex-grow: 1;
  }
  
  li button {
    background-color: #f44336;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    margin-left: 10px;
  }