h1 {		
	font-weight: 700;
	font-size: 32px;
	margin-bottom: 3rem;
}

h2 {		
	font-weight: 700;
	font-size: 24px;
	margin-bottom: 3rem;
}

input {
    border: none;
    border-bottom: solid 2px #3c3c3c;
    font-size: 20px;
    font-family: 'Times New Roman', Times, serif;
    color: #3c3c3c;
    width: 3rem;
    text-align: center;
}

button {        
    padding: 1rem 1.5rem;
    background: 0 0;
    border: solid 2px #3c3c3c;
    color: #3c3c3c;
    font-family: "Times New Roman",Times,serif;
    font-size: 20px;
    font-weight: 700;
    letter-spacing: .1rem;
    cursor: pointer;    
}

button:hover {
    background-color: #565656;
    color: white;
    border: 2px solid #565656;
}

.container {
    margin: auto;
    padding: 1em;
    max-width: 600px;
    text-align: center;
    padding-top: 2rem;
}

.logo {
    width: 50px;
    margin-bottom: 1rem;
}

.description {    
    margin-top: 2rem;
    font-size: 20px;
    font-style: italic;
    line-height: 1.5;    
    text-align: justify;
}

.calc-form {
    text-align: justify;
    margin-top: 2rem;
}

.calc-form div {
    margin: 1rem 0;
}

.calc-form .button-container {
    margin-top: 2rem;
    text-align: center;
}

#cnv {
    margin-top: 1rem;
}

.formula {
    width: 100%;
}

.credits {
    margin: 1em 0 1em 0;
}

.credits a {
    text-decoration: none;
    color: #3c3c3c;
}