body {
  font-family: Arial, sans-serif;
  background: #f4f4f4;
  margin: 0;
  padding: 20px;
}

#auth-section,
#app-section {
  max-width: 500px;
  margin: auto;
  background: white;
  padding: 20px;
  border-radius: 8px;
}

input {
  display: block;
  width: 100%;
  margin: 10px 0;
  padding: 10px;
  box-sizing: border-box;
}

button {
  padding: 10px;
  cursor: pointer;
  width: 100%;
  margin-top: 5px;
}

ul {
  list-style: none;
  padding: 0;
}

li {
  background: #eee;
  margin-top: 10px;
  padding: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

li button {
  width: auto;
  background: red;
  color: white;
  border: none;
  padding: 5px 10px;
}