/* Styles for body */
body {
    font-family: Arial, sans-serif; /* Arial font */
    margin: 0;
    padding: 20px;
    background-color: #f0f0f0;
}

/* Styles for container */
.container {
    max-width: 900px; /* Adjusted to 900px */
    margin: 0 auto;
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* Styles for questions */
.question {
    margin-bottom: 30px;
}

/* Styles for question headings */
.question h3 {
    color: #333;
    margin-top: 0;
    margin-bottom: 10px;
}

/* Styles for code blocks */
.code {
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 6px;
    padding: 20px;
    overflow-x: auto;
    text-align: left; /* Align text to the left */
}

/* Styles for output blocks */
.output {
    margin-top: 20px;
    text-align: center; /* Align image to the center */
}

/* Styles for images */
img {
    max-width: 100%;
    height: auto;
    display: inline-block;
    margin: 20px auto; /* Center align image */
    border-radius: 6px;
}

/* Styles for proof section */
.proof {
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 6px;
    padding: 20px;
    overflow-x: auto;
    text-align: left; /* Align text to the left */
    margin-top: 20px;
}

.exercise-item {
    transition: all 0.3s ease;
}

.exercise-item:hover {
    background-color: #f9f9f9;
    cursor: pointer;
}

.exercise-link {
    text-decoration: none;
    color: #333;
}

.exercise-link:hover {
    color: #007BFF;
}