styles.css

* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}

/* MOBILE FIRST */

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: hsl(185, 41%, 84%);
  font-family: Space Mono, monospace;
}

.body-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: hsl(185, 41%, 84%);
  height: 933px;
  width: 375px;
}

button {
  font-family: Space Mono, monospace;
  min-width: 100px;
  height: 50px;
  border: none;
  border-radius: 5px;
  font-size: 20px;
  font-weight: 700;
}

button:hover {
  cursor: pointer;
}

input {
  font-family: Space Mono, monospace;
  font-weight: 700;
  font-size: 24px;
  width: 200px;
  height: 100%;
  border: none;
  background-color: hsl(185, 41%, 84%);
  color: hsl(186, 14%, 43%);
  text-align: right;
  padding-right: 10px;
}

input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Firefox */
input[type="number"] {
  -moz-appearance: textfield;
}

input:focus {
  outline: none;
}

input::placeholder {
  /* Chrome, Firefox, Opera, Safari 10.1+ */
  color: hsl(184, 14%, 56%);
  opacity: 1; /* Firefox */
}

input:-ms-input-placeholder {
  /* Internet Explorer 10-11 */
  color: hsl(184, 14%, 56%);
}

input::-ms-input-placeholder {
  /* Microsoft Edge */
  color: hsl(184, 14%, 56%);
}

.app-title-container {
  width: inherit;
  height: 150px;
  display: flex;
  justify-content: center;
  flex-direction: column;
  align-items: center;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 5px;
  color: hsl(184, 14%, 43%);
}

.main-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-evenly;
  background-color: hsl(0, 0%, 100%);
  height: 783px;
  width: 375px;
  border-radius: 20px 20px 0px 0px;
  padding: 20px;
}

.container {
  margin-bottom: 20px;
}

.top-container {
  width: 100%;
  margin-bottom: 10px;
}

.bill-container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: 100%;
}

.bill-container:hover {
  cursor: pointer;
}

.bill-input:focus {
  outline: none;
}

.title {
  font-weight: 700;
  color: hsl(184, 14%, 56%);
}

.num-of-people-container {
  width: 100%;
}

.num-of-people-title {
  display: flex;
  justify-content: space-between;
}

.cant-be-zero {
  display: none;
  color: red;
  font-weight: 700;
}

.num-of-people-container:hover {
  cursor: pointer;
}

.bill-input-container,
.num-of-people-input-container {
  display: flex;
  justify-content: space-between;
  width: 100%;
  height: 40px;
  background-color: hsl(185, 41%, 84%);
}

.input-icon {
  height: 18px;
  justify-self: center;
  align-self: center;
  margin-left: 10px;
}

.tip-button-container {
  display: flex;
  flex-flow: row wrap;

  flex-direction: row;
  justify-content: center;
  width: 100%;
}

.tip-button {
  width: 140px;
  height: 50px;
  background-color: hsl(183, 100%, 15%);
  color: hsl(0, 0%, 100%);
  margin-bottom: 15px;
  flex-grow: 1;
}

.tip-button:hover {
  background-color: hsl(172, 67%, 45%);
  color: hsl(183, 100%, 15%);
}

.left {
  margin-right: 15px;
}

.custom-input {
  background-color: hsl(185, 41%, 84%);
  border-radius: 5px;
  text-align: right;
  padding-right: 10px;
  color: hsl(183, 100%, 15%);
}

.custom-input:hover {
  cursor: pointer;
  background-color: hsl(185, 41%, 84%);
}

.custom-input::placeholder {
  /* Chrome, Firefox, Opera, Safari 10.1+ */
  color: hsl(186, 14%, 43%);
  opacity: 1; /* Firefox */
}

.custom-input:-ms-input-placeholder {
  /* Internet Explorer 10-11 */
  color: hsl(186, 14%, 43%);
}

.custom-input::-ms-input-placeholder {
  /* Microsoft Edge */
  color: hsl(186, 14%, 43%);
}

.form-results-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-evenly;

  background-color: hsl(183, 100%, 15%);
  width: 100%;
  height: 250px;
  border-radius: 10px;
}

.info {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
}

.tip-amount {
  margin-bottom: 20px;
}

.tip-amount,
.total {
  display: flex;
  width: 90%;
  justify-content: space-between;
  align-items: center;
  /* border: 1px solid black; */
}

.tip-amount .results-title:first-child,
.total .results-title:first-child {
  color: white;
}

.results-title > p:first-of-type {
  font-size: 16px;
  font-weight: 700;
}

.results-title > p:last-of-type {
  color: hsl(184, 14%, 56%);
  font-size: 12px;
  font-weight: 400;
}

.results {
  font-size: 28px;
  font-weight: 700;
  color: hsl(172, 67%, 45%);
}

.reset-button {
  width: 90%;
  background-color: hsl(172, 67%, 45%);
  color: hsl(183, 100%, 15%);
  font-weight: 700;
}

.reset-button:hover {
  background-color: hsl(185, 41%, 84%);
}

/* DESKTOP STYLES */
@media only screen and (min-width: 1440px) {
  html {
    height: 100%;
  }

  body {
    flex-direction: column;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .body-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 1440px;
    height: 100%;
  }

  .main-container {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    background-color: hsl(0, 0%, 100%);
    height: 460px;
    width: 900px;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0px 12px 20px -20px hsl(172, 67%, 45%);
  }

  .tip-button-container {
    justify-content: stretch;
  }

  .top-container {
    display: flex;
    flex-direction: column;
    justify-content: space-evenly;
    height: 100%;
    width: 400px;
  }

  .left {
    margin-right: 0px;
  }

  .right {
    margin-right: 15px;
    margin-left: 15px;
  }

  .tip-button {
    width: 110px;
    margin-bottom: 15px;
  }

  .custom-input {
    width: 110px;
    height: 50px;
    border-radius: 5px;
    text-align: right;
    /* padding-right: 10px; */
  }

  .form-results-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    padding: 20px;

    background-color: hsl(183, 100%, 15%);
    width: 400px;
    height: 100%;
    border-radius: 15px;
  }

  .results {
    font-size: 44px;
  }

  .info {
    margin-top: 20px;
  }

  .tip-amount,
  .total {
    margin-bottom: 30px;
  }

  .reset-button {
    margin-bottom: 20px;
  }
}