index.css

* {
  margin: 0;
  padding: 0;
}

html,
body,
#app {
  height: 100%;
  overflow: hidden;
}

.todo-list-view {
  box-sizing: border-box;
  padding: 0 12px;
  min-width: 375px;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.todo-list-header {
  display: flex;
  margin-top: 12px;
}

.todo-list-header .todo-list-header-input {
  flex: 1;
}

.todo-list {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  row-gap: 12px;
  flex: 1;
  overflow: scroll;
}

.todo-list .todo-list-item {
  position: relative;
  height: 48px;
  padding: 0 12px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  border-radius: 12px;
  background: #f1f3f5;
}

.todo-list .todo-list-item:hover {
  background: #e0e3e7;
}

.todo-list .todo-list-item:hover .todo-list-item-delete {
  display: inline-block;
  opacity: 1;
}

.todo-list .todo-list-item .todo-list-item-delete {
  display: none;
  position: absolute;
  right: 12px;
}

.todo-list .todo-list-item-completed {
  color: #b0b3b8;
  text-decoration: line-through;
}

.todo-list .todo-list-item .todo-list-item-label {
  margin-left: 12px;
}

.todo-list-footer {
  padding: 6px 12px;
  display: flex;
  justify-content: space-between;
  border-top: 1px solid #e0e3e7;
}

.todo-list-footer .todo-list-footer-left {
  display: flex;
  align-items: center;
  column-gap: 12px;
}