* {
  box-sizing: border-box;
}

body {
  background-color: #f3f6f9;
}

header {
  width: 800px;
  margin: 40px auto 20px auto;
  padding: 20px;
  text-align: center;
  font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

header h1 {
  color: #465a6e;
}

header input {
  display: block;
  width: 100%;
  padding: 16px;
  outline: none;
  border: 1px solid #e8eef1;
  border-radius: 4px;
  font-size: 20px;
  color: #607d8b;
}

header input::placeholder {
  color: #868e96;
}

.todos-box {
  width: 760px;
  margin: 20px auto;
  background-color: #fff;
  font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.todos-list {
  color: #465a6e;
  list-style-type: none;
  margin: 0;
  padding: 0;
}

.todo-item {
  position: relative;
  padding: 16px 12px;
  list-style: none;
  -webkit-user-select: none;
  user-select: none;
  border-bottom: 1px solid #e8eef1;
}

.todo-item:last-child {
  border-bottom: 1px solid #e8eef1;
}

.todo-item.done {
  background: #f9f9f9;
  color: #bbb;
  text-decoration-line: line-through;
  text-decoration-color: #2aa1c0;
}

.todo-item label {
  font-size: 14px;
  position: relative;
  margin: auto 0;
  padding-left: 30px;
  padding-top: 5px;
  cursor: pointer;
}

.todo-item input[type="checkbox"] {
  display: none;
}

.checked-icon {
  position: absolute;
  top: 2px;
  left: 0;
  width: 20px;
  height: 20px;
  background-color: #e6e6e6;
  transition: all .25s ease;
}

.checked-icon:after {
  position: absolute;
  display: none;
  content: '';
  top: 4px;
  left: 8px;
  width: 3px;
  height: 8px;
  transform: rotate(45deg);
  border: solid #fff;
  border-width: 0 2px 2px 0;
}

.todo-item input:checked~.checked-icon {
  background-color: #2aa1c0;
  transition: all .25s ease;
}

.todo-item input:checked~.checked-icon:after {
  display: block;
}

.remove-todo-btn {
  display: none;
  position: absolute;
  right: 12px;
  top: 0;
  bottom: 0;
  background-color: transparent;
  border: 0;
  outline: none;
}

.update-todo-btn {
  display: none;
  position: absolute;
  right: 50px;
  top: 0;
  bottom: 0;
  background-color: transparent;
  border: 0;
  outline: none;
}
.update-text-btn {
  display: none;
  position: absolute;
  right: 50px;
  top: 0;
  bottom: 0;
  background-color: transparent;
  border: 0;
  outline: none;
}

.cancel-text-btn {
  display: none;
  position: absolute;
  right: 12px;
  top: 0;
  bottom: 0;
  background-color: transparent;
  border: 0;
  outline: none;
}

.remove-todo-btn i {
  cursor: pointer;
  color: #465a6e;
}

.update-todo-btn i {
  cursor: pointer;
  color: #465a6e;
}

.todo-item:hover .remove-todo-btn {
  display: block;
}
.todo-item:hover .cancel-text-btn {
  display: block;
}

.todo-item:hover .update-text-btn {
  display: block;
}

.todo-item:hover .update-todo-btn {
  display: block;
}