body, div, input, li, p, span, td, textarea {
    font-family: arial, helvetica, sans-serif;
    font-size: 16px;
}

.calculator-container {
    background-color: white;
    width: 80%;
    max-width: 400px;
    margin: 20px auto;
    padding: 20px;
    border-radius: 20px;
    box-shadow: 0 0 5px #ccc;
}

.input-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 10px;
}

.input-container label {
    width: 40%;
    text-align: right;
    margin-right: 5%;
}

.input-container input, .input-container select {
    width: 40%;
    padding: 5px;
    font-family: 'Roboto', sans-serif;
    font-size: 1rem;
    border: 1px solid #cfd1d8;
    border-radius: 3px;
    outline: none;
}

#button-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

#button-container button {
    padding: 10px;
    border: 0;
    color:#fff;
    font-size:16px;
    background:#084288;
    border-radius: 3px;
}

#button-container button:hover {
    background-color: #434c6d;
}

.matrix-input {
    display: grid;
    gap: 5px;
    margin: 10px auto;
    max-width: 200px;
}

.matrix-input input {
    width: 50px;
    height: 30px;
    text-align: center;
    font-size: 14px;
}

#result {
    text-align: center;
    margin-top: 20px;
    font-weight: bold;
}