body {
    background-color: #ffffff; /* White background */
    color: #000000; /* Black text */
    font-family: Arial, sans-serif;
    margin: 0px;
}

.navbar {
    background-color: indigo; /* Indigo background */
    margin: 0; /* No margin for the navbar */
    border: none; /* Ensure no border */
}

.navbar-brand img {
    height: 40px; /* Adjust logo size */
}
.navbar-brand {
    display: flex;
    align-items: center;
}

.container {
    margin-top: 50px;
}

h1 {
    color: #333;
    font-size: 2.5rem;
    margin-bottom: 20px;
}

div {
    margin-bottom: 10px;
}

.form-group {
    margin-bottom: 20px;
}

.input-lg {
    height: calc(2em + 1rem + 2px); /* Twice the default height */
    font-size: 2rem; /* Increase font size */
}
.form-control.mt-2 {
    margin-top: 0.5rem; /* Reduce vertical space */
}
.border-thin {
    border: 1px solid #000; /* Thin black border */
}
.bg-indigo {
    background-color: #3f51b5 !important; /* Indigo background */
}
.text-indigo {
    color: #3f51b5 !important; /* Indigo text */
}

label {
    display: inline-block;
    width: 100px;
}

input, select {
    padding: 10px; /* Increase padding to make the input controls taller */
    font-size: 1em;
    height: calc(2.5em + 20px); /* Adjust height to make the input controls twice as tall */
}

button {
    padding: 10px 20px;
    font-size: 1em;
    background-color: #007BFF;
    color: white;
    border: none;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}
.btn {
    margin: 0; /* Remove button margin */
    padding: 0.5rem 1rem; /* Adjust button padding */
}

#result {
    text-align: center;
    margin-top: 20px;
    font-size: 1.2em;
    color: #007BFF;
    font-size: 1.5rem; /* Increase font size */
    padding: .5rem; /* Increase padding */
}

.ad-section {
    background-color: #f8f9fa; /* Light grey background */
    border: 1px solid #ddd; /* Light border */
    border-radius: 5px; /* Rounded corners */
    margin-bottom: 20px; /* Space below the section */
}