body {
    margin: 0;
    padding: 0;
    height: 100vh;
    background: url('nerd.jpg') no-repeat center center fixed;
    background-size: cover;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: sans-serif;
}

.notebook-container {
    position: relative;
    width: 80%;
    max-width: 900px;
}

.notebook-image {
    width: 100%;
    height: auto;
    display: block;
}

.notebook-text1 {
    position: absolute;
    top: 12%;       /* aligns text to start just below the book top */
    left: 13%;       /* start writing a bit inside the left page margin */
    width: 38%;     /* span across both pages */
    height: 76%;    /* end before bottom of pages */
    overflow-y: auto;
    padding: 25px;
    box-sizing: border-box;
    border-radius: 4px;
}

.notebook-text2 {
    position: absolute;
    top: 12%;       /* aligns text to start just below the book top */
    left: 50%;       /* start writing a bit inside the left page margin */
    width: 38%;     /* span across both pages */
    height: 76%;    /* end before bottom of pages */
    overflow-y: auto;
    padding: 25px;
    box-sizing: border-box;
    border-radius: 4px;
}