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

body {
    font-family: 'Georgia', serif;
    background-color: #f7f7f7;
    line-height: 1.6;
    padding: 20px;
    color: #333;
}

.container {
    max-width: 900px;
    margin: auto;
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
       border: 2px solid #a3d8f4;

}

h1, h2, h3 {
    color: #2c3e50;
    margin-bottom: 15px;
}
h1{
    text-align: center;
    color: blue;
}
h4{
    float: right;
    margin-top: -30px;
}



ol, ul {
    margin-left: 20px;
    margin-bottom: 20px;
}

p {
    margin-bottom: 10px;
}

.result {
    background: #e8f4fd;
    padding: 10px;
    border-left: 4px solid #3498db;
    margin-bottom: 10px;
}

.steps {
    background: #fdfdfd;
    border: 1px solid #ccc;
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.problem-box {
    background: #f1f1f1;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 6px;
    margin-bottom: 15px;
    font-size: 18px;
}

input[type="text"] {
    padding: 8px;
    width: 60%;
    font-size: 16px;
    margin-top: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

button {
    padding: 10px 20px;
    font-size: 16px;
    margin: 10px 10px 10px 0;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    background-color: #3498db;
    color: #fff;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #2c80b4;
}

#feedback {
    margin-top: 10px;
    font-weight: bold;
    font-size: 16px;
}

#feedback.correct {
    color: green;
}

#feedback.incorrect {
    color: red;
}

.exercise-section {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 2px dashed #ccc;
}

.dynamic-example {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 2px dashed #ccc;
}