body {
    
    justify-content: center; /* Horizontally centers content */
    /* align-items: center; */ /* Use this for vertical centering as well */
}

.welcome {
    text-align: left;
    margin: 20px;
    padding: 10px;
    background-color: #f9f9f9;
    border: 1px solid #ccc;
    font-family: 'Schoolbell', arial, serif;
}

.topic {
    display: flex;
    flex-direction: column;
    
}

.topic-item {
    padding: 1px;
    background-color: #f2f0f0;
    border: 1px solid #ccc;
    margin: 5px;
    max-width: 200px;
}

.homework-header h1 {
    color: orangered;
    text-align: center;
    
}


.homework-main-header {
    display: flex;
    flex-flow: row nowrap;
    justify-content: center; /* Horizontally centers content */
}

.homework-main-header-content {
    margin: 1em;
}

nav ol {
    display: flex;
    flex-flow: row wrap;
    justify-content: flex-start; /* Horizontally centers content */
    /* align-items: center; */ /* Use this for vertical centering as well */
}

nav ol li {
        
    border: 1px solid #ccc;
    padding: 5px 10px;
    margin: 5px;    
    list-style-type: none;
}

nav ol li a {
    text-decoration: none;
    color: rebeccapurple;
    font-weight: bold;

}   

h1 {
    margin: 0 auto;
    color: #333;
    text-align: center;
}

h2 {
    color: #555;
    text-align: center;
}

h3 {
    color: #777;
    text-align: center;
}