/* general */

html {
    margin: 0px;
    padding: 0px;
    box-sizing: border-box;
    font-family: Georgia, sans-serif;
    font-size: 16px;
    color: #fff;
}

p {
    font-weight: bold;
}

a {
    text-decoration: none;
    color: #fff;
}

a:hover {
    color: #1e90ff;
}

/* header */

#banner {
    width: 40%;
    min-height: 50px;
    background-color: #45b6fe;
    padding-left: 2%;
    line-height: 50px;
    text-align: center;
    margin: 0 auto;
}

/* navigation */

#navigation {
    width: 50%;
    min-height: 40px;
    background-color: #45b6fe;
    text-align: center;
    line-height: 20px;
    margin: 10px auto;
}

.navbar ul {
   list-style-type: none;
    padding: 0px;
    margin: 0px;
    overflow: hidden;
}

.navbar a {
    color: #fff;
    text-decoration: none;
    padding: 15px;
    display: block;
    text-align: center;
}

.navbar a:hover {
    color: #1e90ff;
}

.navbar li {
    float: left;
    font-weight: bold;
}

/* home container and content (sidebar + introduction) */

#home-container{
    width: 100%;
    margin: 10px auto;
    display: flex;
    justify-content: center;
    gap: 30px;
    

}

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


#sidebar {
    width: 25%;
    height: 660px;
    overflow-y: scroll;
    float: left;
    text-align: center;
    background-color: #6ac5fe;
    border: 5px solid #469fcf;
    font-weight: bold;
}

#purpose-article {
    width: 35%;
    height: 660px;
    overflow-y: scroll;
    float: right;
    text-align: center;
    background-color: white;
    color: #45b6fe;
    border: 5px dotted #45b6fe;

}

#purpose-article h2 {
    color: #469fcf;
}


/* pictures and such */

.top-banner {
    width: 50%;
    display: flex;
    justify-content: center;
    margin: 10px auto;
}

.book {
    width: 40%;
}