.calculadora-cajas {
padding-right: 20px;
padding-left: 20px;
padding-top: 20px;
margin-bottom: 20px;
border: 1px solid #ccc;
border-radius: 10px;
box-shadow: 0px 2px 5px rgba(0, 0, 0, 0.1);
width: 300px;   }
label {
display: block;
margin-bottom: 5px;
font-weight: bold;
}
input[type="text"], button {
padding: 10px;
border: 1px solid #ccc;
border-radius: 5px;
width: 100%;
box-sizing: border-box;
margin-bottom: 10px;
}
button {
background-color: #f2941a;
color: white;
cursor: pointer;
}
button:hover {
background-color: #f2941a;
}
#resultado { font-size: 15px;
font-weight: bold;
margin-bottom: 5px;
}
#metros_cuadrados {
width: 70%; margin: 0px;
border: 1px solid #ccc;
border-radius: 5px;
box-sizing: border-box;
margin-bottom: 10px;
}
.quantity {
display: inline-flex; align-items: center; }
.quantity + span {
margin-left: 10px; font-size: 14px;
color: #555;
white-space: nowrap; vertical-align: middle; }
.subtotal-dinamico {
margin-top: 10px;
font-size: 16px;
color: #333;
}
.subtotal-dinamico strong {
font-weight: bold;
}