.calculatorac {
	background-color: #fff;
	padding: 20px;
	margin: 20px auto;
	max-width: 710px;
	border-radius: 10px;
	box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
}

.calculatorac form {
    display: flex;
    flex-direction: column;
	  flex-wrap: nowrap;
}


.row label {
	display: block;
	margin-bottom: 5px;
	font-weight: bold;
}


.row select, input[type="number"] {
    padding: 5px;
    border: 1px solid #ccc;
    border-radius: 3px;
    height: 40px;
}


button[type="button"] {
	background-color: #4CAF50;
  color: white;
  border: none;
  padding: 10px 20px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  cursor: pointer;
  border-radius: 5px;
}

button[type="reset"] {
  background-color: #f44336;
  color: white;
  border: none;
  padding: 10px 20px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  cursor: pointer;
  border-radius: 5px;
}

button[type="button"]:hover, button[type="reset"]:hover {
  opacity: 0.8;
}

button:disabled {
	background-color: #ccc;
	cursor: not-allowed;
}

button[type="button"]:last-of-type {
	background-color: #f44336;
}

button span {
    font-size: large;
}

.result-input {
  border: 2px solid red !important;
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin-right: -15px;
    margin-top: 20px;
    margin-bottom: 15px;
}

.col-md-6 {
    flex: 0 0 35%;
    max-width: 35%;
}

.col-md-7 {
    flex: 0 0 30%;
    max-width: 30%;
    align-self: flex-end;
}

.col-md-8 {
    flex: 0 0 35%;
    max-width: 35%;
    align-self: flex-end;
}

@media (max-width: 640px) {
	
		.col-md-6 {
    flex: 0 0 50%;
    max-width: 50%;
}
	
  .col-md-8 {
    flex: 0 0 100%;
    max-width: 100%;
		margin-top: 10px;
  }
	
}


@media (max-width: 480px) {

	.col-md-7 {
    flex: 0 0 100%;
    max-width: 100%;
		margin-top: 10px;
}

}