body 
{
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: rgb(57, 243, 104);
}

h1 {
  text-align: center;
  margin-top: 50px;
}

form {
  width: 50%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

input[type="text"] {
  padding: 12px 20px;
  margin: 8px 0;
  box-sizing: border-box;
  border: 2px solid #ccc;
  border-radius: 4px;
  font-size: 16px;
  width: 70%;
}

button[type="button"] {
  width: 25%;
  padding: 14px 20px;
  margin: 8px 0;
  border: none;
  border-radius: 4px;
  background-color: #4CAF50;
  color: white;
  cursor: pointer;
  font-size: 16px;
}

#task-list {
  width: 50%;
  margin: 0 auto;
  padding: 0;
}

#task-list li {
  list-style-type: none;
  padding: 12px 20px;
  margin: 8px 0;
  background-color: #f2f2f2;
  border-radius: 4px;
}