body {
  background: linear-gradient(#fec5c5, #834848);
  background-repeat: no-repeat;
  height: 100vh;
  text-align: center;
}

#container {
  box-shadow: rgba(149, 157, 165, 0.2) 0px 8px 24px;
  margin: 19px auto;
  width: 427px;
  min-height: 180px;
  background-color: white;
  animation: slideDown 0.6s cubic-bezier(0.25, 0.1, 0.25, 1.5) forwards;
}

#headerText,
#todoInput,
#todoBtn,
#todoUl,
#completedText {
  opacity: 0;
}

#headerText {
  animation: fadeIn 0.6s forwards;
  animation-delay: 0.6s;
}

#completedText {
  animation: fadeIn 0.6s forwards;
  animation-delay: 1s;
}

#todoInput {
  animation: fadeIn 0.6s forwards;
  animation-delay: 1.2s;
}

#todoBtn {
  animation: fadeIn 0.6s forwards;
  animation-delay: 1.4s;
}

#todoUl {
  animation: fadeIn 0.6s forwards;
  animation-delay: 1.6s;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideDown {
  0% {
    transform: translateY(-100%);
    opacity: 0;
  }
  70% {
    transform: translateY(15px);
    opacity: 1;
  }
  100% {
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  0% {
    transform: translateY(20px);
    opacity: 0;
  }
  100% {
    transform: translateY(0);
    opacity: 1;
  }
}

#todoUl {
  list-style-type: none;
}

.todoItem {
  margin-bottom: 15px;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

#todoBtn {
  height: 32px;
  width: 49px;
  font-weight: bold;
}

#todoInput {
  margin-top: 20px;
  width: 223px;
  height: 27px;
  border: 1px solid #9e9e9e;
  outline: none;
  margin-bottom: 10px;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
}

#todoInput:focus {
  border: 2px solid #205ba6;
  background-color: white;
}

#headerText {
  padding-top: 10px;
  font-size: 46px;
  margin-bottom: 7px;
}

#completedText {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 13px;
}

#todoElements {
  margin-top: -3px;
}

#todoUl {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 25px;
}

.deleteBtn {
  border: none;
  background-color: white;
}

.errorMsg {
  font-weight: bold;
  font-family: Arial, Helvetica, sans-serif;
  color: #ab0c0d;
  font-style: italic;
  font-size: 14px;
  animation-name: blink;
  animation-duration: 0.6s;
  animation-iteration-count: 3;
  animation-timing-function: ease-in-out;
}

@keyframes blink {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
}

.todoText {
  font-size: 26px;
  cursor: pointer;
}

.todoText:hover {
  text-decoration: line-through;
}

li {
  margin-bottom: 15px;
}

li:last-of-type {
  padding-bottom: 30px;
}

.completed {
  color: #7a7a7a;
  text-decoration: line-through;
  transition: color 0.3s ease, text-decoration 0.3s ease;
}

#inputDiv,
#todoUl,
#completedText {
  opacity: 1;
  transform: translateY(0);
}

.errorMsg {
  display: none;
  font-weight: bold;
  font-family: Arial, Helvetica, sans-serif;
  color: #ab0c0d;
  font-style: italic;
  font-size: 14px;
}