style.css

:root {
  --green: #1fb141;
  --gray: #e0e0e0;
  --light-gray: #f3f3f3;
  --white: #ffffff;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  display: grid;
  place-items: center;
  min-height: 100vh;
  font-family: "Inter", sans-serif;
  background: var(--gray);
  padding-inline: 16px;
}

button,
input[type="checkbox"] {
  cursor: pointer;
}

.todo {
  background: var(--white);
  border-radius: 16px;
  width: 100%;
  max-width: 396px;
  min-height: 640px;
  padding: 40px 20px 20px;
  box-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.todo-title {
  font-size: 32px;
  text-align: center;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--light-gray);
  margin-bottom: 20px;
}

.todo-actions {
  display: flex;
  justify-content: space-between;
}

.create-button {
  border: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--green);
  color: var(--white);
  font-size: 24px;
  line-height: 0;
  transition: 0.3s;
  transition-timing-function: cubic-bezier(0.2, 1, 0.2, 1.4);
}

.create-button:hover {
  transform: scale(1.1);
}

.todo-list {
  list-style: none;
  margin-top: 12px;
  max-height: 444px;
  overflow: auto;
}

.task {
  padding: 16px;
  background: var(--light-gray);
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.task + .task {
  margin-top: 4px;
}

.task input[type="checkbox"] {
  accent-color: var(--green);
}

.task p {
  flex: 1;
  outline: none;
}

.delete-button {
  border: none;
  width: 20px;
  height: 20px;
  background-color: var(--light-gray);
  background-image: url("./assets/trash.svg");
  background-repeat: no-repeat;
  background-position: center;
}

@media (max-width: 400px) {
  .todo {
    padding-top: 20px;
  }

  .todo-title {
    font-size: 24px;
  }

  .task p {
    font-size: 14px;
  }
}