*, *::before, *::after {
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: serif;
  font-size: 24px;
  font-weight: 400;
}

body {
  background-color: #c5e4e7;
  min-height: 100vh;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
}

h3 {
  font-size: 16px;
  color: #00494d;
  margin-bottom: 5px;
  font-weight: 700;
}

input {
  width: 100%;
  text-align: right;
  padding: 5px;
  font-size: 24px;
  font-weight: 700;
  border: none;
  outline: none;
  background: #f4fafa;
  color: #00494d;
  border-radius: 5px;
}

input:hover {
  border: 3px solid #26c0ab;
}

img {
  position: absolute;
  top: 25%;
  margin-left: 10px;
}

.time_spliter h1 {
  margin-bottom: 50px;
  text-align: center;
  text-transform: uppercase;
  font-size: 24px;
  line-height: 1.6;
}

.container {
  width: 760px;
  max-width: 100%;
  background: white;
  border-radius: 10px;
  padding: 40px 30px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  gap: 30px;
}

.container .tips_entry {
  width: 50%;
}

.container .tips_calculator {
  width: 50%;
  background-color: #00494d;
  padding: 40px;
  border-radius: 5px;
}

.display_tips {
  margin-bottom: 40px;
}

.values,
.input_number {
  position: relative;
}

.percentages {
  display: -ms-grid;
  display: grid;
  -ms-grid-columns: (1fr)[3];
      grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 45px;
  grid-gap: 10px;
}

.percentages .perct {
  width: 100px;
  max-width: 100%;
  background-color: #00494d;
  border-radius: 5px;
  cursor: pointer;
}

.percentages .perct p {
  text-align: center;
  padding: 10px;
  color: white;
  font-weight: 700;
}

.percentages .perct:hover {
  background-color: #c5e4e7;
}

.percentages .perct:hover p:hover {
  color: #00494d;
}

.percentages #customize input {
  width: 100%;
  height: 100%;
  border: none;
  outline: none;
  background-color: #f4fafa;
  font-size: 20px;
  text-align: right;
  color: #00494d;
}

.percentages #customize input:hover {
  border: 3px solid #26c0ab;
}

.tips_percentages {
  margin-bottom: 40px;
}

.tips_percentages h3 {
  margin-bottom: 20px;
}

.total_persons .person_header {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  margin-bottom: 10px;
}

.total_persons .error_message {
  color: #c70606;
  display: inline-block;
  visibility: hidden;
}

.tip_amount {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  margin-bottom: 20px;
}

.tip_amount .header {
  margin-bottom: 10px;
}

.tip_amount .header h4 {
  color: #f4fafa;
  font-size: 15px;
}

.tip_amount .header small {
  color: #5e7a7d;
}

.tip_amount #amount,
.tip_amount #total_value {
  color: #26c0ab;
  font-weight: 700;
  font-size: 30px;
}

.amount_container {
  margin-bottom: 100px;
}

.reset {
  width: 100%;
  background-color: #0a6870;
  border-radius: 5px;
}

.reset button {
  padding: 10px;
  text-align: center;
  text-transform: uppercase;
  color: #00494d;
  background-color: inherit;
  border: none;
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
}

.reset button:hover {
  background-color: #c5e4e7;
}

.reset .reset_btn {
  width: 100%;
}

.perct.completed {
  background: #26c0ab;
}

.perct.completed p {
  color: #00494d;
}

.reset.completed {
  background: #26c0ab;
}

@media screen and (max-width: 654px) {
  .container {
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
  }
  .container .tips_entry {
    width: 100%;
  }
  .container .tips_calculator {
    width: 100%;
  }
}

@media screen and (max-width: 374px) {
  .percentages {
    -ms-grid-columns: (1fr)[2];
        grid-template-columns: repeat(2, 1fr);
  }
}