body {
  background-color: #1e213f;
  color: #d7e0ff;
}

.container {
  text-align: center;
  width: 100%;
  padding: 10px 0;
}

.timer {
  display: inline-block;
  padding: 10px;
  width: 600px;
  box-sizing: border-box;
}

h1 {
  font-size: 2em;
  width: 8ch;
  margin: 20px auto;
}

.button-container {
  margin-top: 20px;
  display: flex;
  justify-content: center;
}

.button {
  background-color: #2e325a;
  color: #fff;
  border: none;
  border-radius: 5px;
  padding: 10px 20px;
  margin: 5px;
  cursor: pointer;
}

.button:hover {
  background-color: #f87070;
}

.hidden {
  display: block;
}

.timer-display {
  font-size: 5em;
  margin-top: 20px;
  font-weight: bold;
}

#buttons {
  margin-top: 20px;
}

#start,
#stop,
#reset {
  background-color: #2e325a;
  color: #fff;
  border: none;
  border-radius: 5px;
  padding: 10px 20px;
  margin: 10px;
  cursor: pointer;
}

#reset:hover {
  background-color: red;
}

#stop:hover {
  background-color: tomato;
}

#start:hover {
  background-color: #219a52;
}

#short-break:hover {
  background-color: #219a52;
}

#long-break:hover {
  background-color: #9146FF;
}

#timer-message {
  color: white;
  background-color: tomato;
  display: none;
  padding: .5em;
  font-size: 1em;
  text-align: center;
  border-radius: 1em;
}

/* Include the padding and border in an element's total width and height */
* {
  box-sizing: border-box;
}

/* Remove margins and padding from the list */
ul {
  margin: 0;
  padding: 0;
}

/* Style the list items */
ul li {
  cursor: pointer;
  position: relative;
  padding: 12px 8px 12px 40px;
  list-style-type: none;
  background: #212529;
  font-size: 18px;
  transition: 0.2s;

  /* make the list items unselectable */
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

/* Set all odd list items to a different color (zebra-stripes) */
ul li:nth-child(odd) {
  background: #1a1e21;
}

/* Darker background-color on hover */
ul li:hover {
  background: #2a2a2a;
}

/* When clicked on, add a background color and strike out text */
ul li.checked {
  background: #000000;
  color: #fff;
  text-decoration: line-through;
}

/* Add a "checked" mark when clicked on */
ul li.checked::before {
  content: '';
  position: absolute;
  border-color: #fff;
  border-style: solid;
  border-width: 0 2px 2px 0;
  top: 10px;
  left: 16px;
  transform: rotate(45deg);
  height: 15px;
  width: 7px;
}

/* Style the close button */
.close {
  position: absolute;
  right: 0;
  top: 0;
  padding: 12px 16px 12px 16px;
}

.close:hover {
  background-color: #f44336;
  color: white;
}

/* Style the header */
.todoList {
  background-color: rgb(33, 37, 41);
  padding: 30px 40px;
  color: white;
  text-align: center;
}

/* Clear floats after the header */
.todoList:after {
  content: "";
  display: table;
  clear: both;
}

/* Style the input */
input {
  margin: 0;
  border: none;
  border-radius: 0;
  width: 75%;
  padding: 10px;
  float: left;
  font-size: 16px;
}

/* Style the "Add" button */
.addBtn {
  padding: 10px;
  width: 25%;
  background: #212529;
  color: #555;
  float: left;
  text-align: center;
  font-size: 16px;
  cursor: pointer;
  transition: 0.3s;
  border-radius: 0;
}

.addBtn:hover {
  background-color: #bbb;
}