* {
  color: white;
  margin-block: 0;
  margin-inline: 0;
  padding-inline: 0;
  padding-block: 0;
  box-sizing: border-box;
}

body {
  background: #2c3e50;
  margin-block: 3rem;
}

button {
  cursor: pointer;
}

/* #region calculator */

.calculator {
  display: block flex;
  flex-wrap: wrap;
  flex-direction: row;
  justify-content: center;
  text-align: center;
}

.calculator__header {
  flex: 0 0 100%;
  margin-block-end: 1rem;
}

.calculator__numbers {
  display: block flex;
  flex-direction: column;
}

.calculator__numbers button {
  background: #225378;
  border: none;
  margin-block: 0.1em;
  margin-inline: 0.1em;
  block-size: 4em;
  inline-size: 4em;
}

.calculator__numbers button:hover {
  background-color: #2253ff;
}

:is(.calculator__action-buttons, .calculator__numbers__row) {
  display: block flex;
  flex-direction: row;
  justify-content: center;
}

.calculator__operators {
  display: block flex;
  flex-direction: column;
  margin-inline-start: 0.6em;
}

.calculator__operators button {
  background: #1695a3;
  border: none;
  margin-block: 0.1em;
  margin-inline: 0.1em;
  block-size: 4em;
  inline-size: 4em;
}

.calculator__operators button:hover {
  background: #169ff3;
}

.calculator__operators {
  display: block flex;
  flex-direction: column;
}

button[title="enter"] {
  margin-block-start: 1em;
  background: #85db18;
  border: none;
  block-size: 3em;
  inline-size: 6em;
  margin-inline-start: 1em;
}

button[title="enter"]:hover {
  background-color: #154b18;
}

button[title="clear"] {
  background: #e74c3c;
  border: none;
  block-size: 3em;
  inline-size: 6em;
  margin-block-start: 1em;
}

button[title="clear"]:hover {
  background: #a74c3c;
}

/* #endregion */

/* #region table */
.accounting {
  display: block flex;
  flex-direction: row;
  flex-wrap: wrap;
  padding-inline: 1rem;
}
.accounting__header {
  flex: 0 0 100%;
}
.accounting__table {
  display: block flex;
  flex-flow: column nowrap;
  line-height: 1.25;
  border: 0;
  margin-inline: 1rem;
}

.accounting__table caption {
  padding-block: 1rem;
  font-size: 1.5rem;
  font-weight: 900;
  color: gray;
  text-align: justify;
}

.accounting__table tr {
  display: block flex;
}

.accounting__table tr:nth-of-type(odd) {
  background-color: darkslategray;
}

.accounting__table thead th {
  font-weight: 700;
  background-color: whitesmoke;
  color: black;
}

.accounting__table th,
.accounting__table td {
  display: block flex;
  flex: 1 0;
  align-items: start;
  justify-content: start;
  padding-inline: 0.2rem;
  padding-block: 0.5rem;
  border-inline: 1px solid black;
  border-block: 1px solid black;
}

.accounting__table th:nth-child(1),
.accounting__table td:nth-child(1) {
  flex: 0.5 0;
}
.accounting__table th:nth-child(2),
.accounting__table td:nth-child(2) {
  flex: 0.4 0;
}
.accounting__table th:nth-child(3),
.accounting__table td:nth-child(3) {
  flex: 0.8 0;
}
.accounting__table th:nth-child(4),
.accounting__table td:nth-child(4) {
  flex: 0.4 0;
}
.accounting__table th:nth-child(5),
.accounting__table td:nth-child(5) {
  flex: 0.7 0;
}

.numbers {
  word-break: break-word;
}
/* #endregion */