* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
}

header {
    background-color: #333333;
    color: #fff;
    padding: 10px 0;
    text-align: center;
}

header .logo h1 {
    font-size: 24px;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    padding: 0;
}

nav ul li {
    margin: 0 15px;
}

nav ul li a {
    text-decoration: none;
    color: white;
    font-size: 18px;
}

footer {
    background-color: #333;
    color: white;
    padding: 20px 0;
    text-align: center;
    position: relative;
    bottom: 0;
    width: 100%;
}

footer button {
    background-color: #ff4500;
    color: white;
    padding: 10px 20px;
    border: none;
    cursor: pointer;
    margin-top: 10px;
}

footer button:hover {
    background-color: #e03e00;
}
body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    margin: 0;
    padding: 20px;
}

.container {
    max-width: 600px;
    margin: auto;
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    color: #333;
}

.input-section,
.unit-section {
    margin-bottom: 20px;
}

input,
select,
button {
    width: 100%;
    padding: 10px;
    margin-top: 8px;
    font-size: 16px;
    border-radius: 4px;
    border: 1px solid #ddd;
}

button {
    background-color: #4CAF50;
    color: white;
    cursor: pointer;
}

button:hover {
    background-color: #45a049;
}

.result-section {
    text-align: center;
    margin-top: 20px;
}

#result {
    font-weight: bold;
    color: #4CAF50;
}