html {font-family: Helvetica;}
h1 {
  color: lightblue;
  background-color: white;
  border-radius: 36px;
  text-align: center;
}

button {
  line-height: 30px;
  background-color: lightblue;
  color: white;
  border-radius: 36px;
  border: none;
  cursor: pointer;
  padding: 12px;
  width:max;
}

p {
  color: lightblue;
}

html {
  background-color: darkgray;
}

main {
  height: auto;
  margin-top: 20px;
}

section {
  color: lightblue;
  background-color: white;
  line-height: 30px;
  border-radius: 36px;
  text-align: center;
}

input[type="text"] {
  padding: 10px;
  border-radius: 10px;
  border: none;
  margin-right: 10px;
}
ul {
  list-style-type: none;
  padding: 0;
}

li {
  background-color: white;
  color: black;
  margin: 5px 0;
  padding: 10px;
  border-radius: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.done {
  text-decoration: line-through;
  color: gray;
}