* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
  color: rgb(63, 63, 63);
}

.container {
  background: linear-gradient(180deg, #49b6fa, #087ec7) no-repeat;
  width: 100%;
  min-height: 100vh;
  padding: 10px;
}

.todo-app {
  background: rgb(248, 248, 248);
  width: 100%;
  max-width: 540px;
  border-radius: 10px;
  max-height: 800px;
  padding: 30px;
  margin: 100px auto;
}

.todo-app h2 {
  margin-bottom: 10px;
  display: flex;
  justify-content: center;
}

.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 24px;
}

input {
  flex: 1;
  border: none;
  outline: none;
  background: rgb(255, 255, 255);
  border-radius: 10px;
  padding: 10px 20px;
}

button {
  border: none;
  outline: none;
  background: #0588da;
  border-radius: 20px;
  padding: 7px 30px;
  color: white;
  cursor: pointer;
  font-size: 16px;
}

ul li {
  list-style: none;
  font-size: 14px;
  padding: 10px 5px 10px 40px;
  cursor: pointer;
  user-select: none;
  background: white;
  border-radius: 10px;
  box-shadow: 4px 4px 3px #eaeaea;
  margin: 12px 24px;
  position: relative;
}

ul li::before {
  content: '';
  position: absolute;
  height: 24px;
  width: 24px;
  border-radius: 50%;
  background-image: url(./images/unchecked.png);
  background-size: cover;
  background-position: center;
  top: 9px;
  left: 10px;
}

ul li.checked {
  text-decoration: line-through;
  color: rgb(204, 204, 204);
}

ul li.checked::before {
  background-image: url(./images/checked.png);
}

ul li span {
  position: absolute;
  right: 0;
  top: 0;
  width: 40px;
  height: 40px;
  font-size: 22px;
  color: rgb(63, 63, 63);
  line-height: 40px;
  text-align: center;
  border-radius: 50%;
}

ul li span:hover {
  background: rgb(210, 210, 210);
}