body {
    font-family: Arial, sans-serif;
    margin: 0;
    background-color: #f2f2f2;
  }
  
  h1 {
    text-align: center;
    margin-top: 50px;
  }
  
  #to-do-form {
    display: flex;
    justify-content: center;
    margin-top: 30px;
  }
  
  #input-task {
    padding: 10px;
    border: none;
    border-radius: 5px;
    margin-right: 10px;
    font-size: 18px;
    width: 45%;
  }
  
  button {
    padding: 10px;
    border: none;
    border-radius: 5px;
    font-size: 18px;
    cursor: pointer;
    background-color: #4e4c5cd5;
    color: white;
  }
  
  #pending-tasks,
  #completed-tasks {
    width: 50%;
    margin: 50px auto;
    background-color: #fff;
    box-shadow: 0px 0px 10px 0px rgba(0, 0, 0, 0.2);
    border-radius: 5px;
    padding: 20px;
  }
  
  #pending-tasks h2,
  #completed-tasks h2 {
    text-align: center;
    margin-bottom: 20px;
  }
  
  ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
  }
  
  li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    border-bottom: 1px solid #ddd;
  }
  
  li:last-child {
    border-bottom: none;
  }
  
  .completed {
    text-decoration: line-through;
    color: #aaa;
  }
  
  #pending-tasks {
    background-color: #9623e2;
  }
  
  #completed-tasks {
    background-color: #e20fbf;
  }
  
  #task-list li {
    background-color: #fff;
  }
  
  #completed-list li {
    background-color: #e6ffe6;
  }