.prelude-article {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    line-height: 1.6;
    color: #333;
}

.prelude-article h1 {
    font-size: 2.5em;
    margin-bottom: 0.5em;
    color: #000;
    border-bottom: 3px solid #397cbe;
    padding-bottom: 10px;
}

.prelude-article h2 {
    font-size: 1.8em;
    margin-top: 1.5em;
    margin-bottom: 0.8em;
    color: #397cbe;
}

.prelude-article p {
    margin-bottom: 1em;
    text-align: justify;
}

.prelude-article img {
    max-width: 500px;
    height: auto;
    margin: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.img-left {
    float: left;
    margin-right: 25px;
    margin-left: 0;
}

.img-right {
    float: right;
    margin-left: 25px;
    margin-right: 0;
}

.clearfix::after {
    content: "";
    display: table;
    clear: both;
}

.intro-text {
    font-size: 1.1em;
    font-weight: 500;
    margin-bottom: 1.5em;
    padding: 15px;
    background-color: #f8f8f8;
    border-left: 4px solid #397cbe;
}

/* Mobile responsive styles */
@media screen and (max-width: 768px) {
    .prelude-article img {
        max-width: calc(100% - 40px);
        width: calc(100% - 40px);
        float: none !important;
        margin: 20px 20px;
        display: block;
    }
    
    .img-left,
    .img-right {
        float: none !important;
        margin-left: 20px;
        margin-right: 20px;
    }
    
    .prelude-article {
        padding: 15px;
    }
    
    .prelude-article h1 {
        font-size: 2em;
    }
    
    .prelude-article h2 {
        font-size: 1.5em;
    }
    
    .prelude-article p {
        text-align: left;
    }
}