/* Element selector */
body {
    font-family: Arial, sans-serif;
    background-color: #f0f8ff;
    margin: 20px;
}

/* Class selector */
.description {
    font-size: 16px;
    color: #333;
}

/* Class selector for steps */
.steps {
    background-color: #e6f2ff;
    padding: 15px;
    border-radius: 5px;
}

/* ID selector */
#main-title {
    color: #1a73e8;
    text-align: center;
}

/* Image styling using class */
.diagram {
    display: block;
    margin: 20px auto;
    max-width: 400px;
}