style.css

body {
    font-family: 'Arial', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
}

.converter-container {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    width: 350px;
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    color: #555;
}

input, select, button {
    display: block;
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border-radius: 4px;
    border: 1px solid #ddd;
    box-sizing: border-box;
}

select {
    cursor: pointer;
    -webkit-appearance: none; /* Removes default arrow for Webkit browsers */
    -moz-appearance: none; /* Removes default arrow for Firefox */
    appearance: none; /* Removes default arrow for modern browsers */
    background: url('data:image/svg+xml;utf8,<svg fill="black" height="24" viewBox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"><path d="M7 10l5 5 5-5z"/></svg>') no-repeat;
    background-position: right 10px center;
    background-size: 12px;
    /* Ensure background color and text color is visible */
    color: #333;
    background-color: #fff;
}

/* Style adjustments for <option> elements */
select option {
    color: #333; /* Dark text color for visibility */
    background-color: #fff; /* Light background for contrast */
    padding: 5px; /* Spacing for readability */
}

button {
    background-color: #007bff;
    color: white;
    border-color: #007bff;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
    border-color: #0056b3;
}

#result {
    font-size: 20px;
    margin-top: 10px;
    text-align: center;
}

/* Additional CSS for focus and hover states */
input:focus, select:focus, button:focus {
    outline: none;
    border-color: #007bff;
}

input:hover, select:hover {
    border-color: #aaa;
}

/* Ensure that options are visible during a focus state */
select:focus option {
    background-color: #fff;
}