html, body {
  height: 100%;
  margin: 0;
}

body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f4;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  padding-top: 50px;
}

.container {
  background: #fff;
  padding: 20px 30px;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
  width: 300px;
  margin-bottom: 20px;
}

h1 {
  text-align: center;
}

.input-container {
  display: flex;
  gap: 10px;
}

input[type="text"] {
  flex: 1;
  padding: 8px;
  border: 1px solid #ccc;
  border-radius: 4px;
}

button {
  padding: 8px 12px;
  background-color: #28a745;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

button:hover {
  background-color: #218838;
}

ul {
  list-style: none;
  padding-left: 0;
  margin-top: 20px;
}

li {
  display: flex;
  justify-content: space-between;
  margin-bottom: 10px;
  background: #e9ecef;
  padding: 8px;
  border-radius: 4px;
}

li button {
  background-color: #dc3545;
}

li button:hover {
  background-color: #c82333;
}

footer {
  padding: 10px;
  background-color: #333;
  color: white;
  text-align: center;
  width: 100%;
  position: relative;
  bottom: 0;
  left: 0;
  margin-top: auto;
}