secajs/src/public/css/offers.css

@media (max-width: 768px) {
  #offers-root {
    margin: 10px 10px;
  }

  #close-offer-controls-x {
    width: 25px;
  }

  #premium-selector-area {
    width: 60px;
  }

  #create-offer-controls > * {
    width: 100%;
  }

  .checkbox-row {
    width: 90%;
  }

  .checkbox-row > input[type='checkbox'] {
    flex-shrink: 0;
    margin-left: 5%;
  }
}

@media (min-width: 769px) {
  #offers-root {
    width: 75%;
    margin: 20px auto;
  }

  #close-offer-controls-x {
    width: 50px;
  }

  #premium-selector-area {
    width: 100px;
  }

  #create-offer-controls > * {
    margin-left: 15%;
    margin-right: 15%;
    width: 70%;
  }

  .checkbox-row {
    width: 60%;
  }

  .checkbox-row > input[type='checkbox'] {
    flex-shrink: 0;
    margin-left: 20%;
  }
}

#create-offer-controls > * {
  text-align: center;
}

#close-offer-controls-area {
  display: flex;
  justify-content: end;
}

#premium-area > * {
  display: block;
}

#premium-content-area {
  width: 80%;
  margin-left: auto;
  margin-right: auto;
  display: flex;
}

#premium-selector-area {
  width: 23%;
  margin-left: 0;
  margin-right: 5%;
  display: flex;
}

#premium-value {
  border: 1px solid gray;
  width: 50%;
  align-content: center;
}

#premium-buttons-container {
  width: 50%;
}

.premium-button {
  width: 100%;
  height: 50%;
  font-size: 1em;
}

#premium-price-display-area {
  margin-left: 0;
  margin-right: 0;
  width: 70%;
}

#amount-area-content {
  width: 30%;
  margin-left: auto;
  margin-right: auto;
}

.money-amount-input-area {
  padding: 0;
  width: 100%;
  display: flex;
}

.money-amount-input-area > * {
  display: inline-block;
  font-size: 1em;
  height: 2em;
  vertical-align: middle;
}

.input-money-amount {
  width: 75%;
  margin: 0;
}
.money-amount-input-area .curr-symbol {
  background-color: #d8d8d8;
  width: 25%;
  margin: 0;
  border: 1px solid gray;
}

.money-amount-input-area .curr-symbol .curr-character {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
}

.checkbox-row {
  display: flex;
  margin-left: auto;
  margin-right: auto;
}
.checkbox-row > label {
  text-align: start;
  margin-right: auto;
  margin-left: 0;
  align-content: center;
}

.checkbox-row > input[type='checkbox'] {
  flex-shrink: 0;
  margin-right: 1em;
  height: 2em;
  width: 2em;
}