body {
    background-color: gray;
}

p {
    font-weight: 500;   
    margin-left: 10px; 
    margin-right: 10px;
    margin-top: 10px;
    margin-bottom: 10px;
    font-family: Sans-serif;
    line-height: 1.4;
}

h1 {
    font-weight: 500;   
    margin-left: 10px; 
    margin-right: 10px;
    margin-top: 10px;
    margin-bottom: 10px;
    font-family: Sans-serif;
    line-height: 1.4;
}

h2 {
    font-weight: 500;   
    margin-left: 10px; 
    margin-right: 10px;
    margin-top: 10px;
    margin-bottom: 10px;
    font-family: Sans-serif;
    line-height: 1.4;
}

#page_stuff {
    background-color: lightgrey;
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 90%;
}

#header_section {
    background-color: #3333A2;
    display: block;
    /*
    margin-left: auto;
    margin-right: auto;
    width: 90%;
    */
}

#menu_section {
    display: flex;
    margin-left: auto;
    margin-right: auto;
    width: 99%;
}

.menu_item {
    flex: 1;
}

.menu_item a {
    font-size: 20px;
    color: white;
    display: block;
    text-decoration: none;
    text-align: center;
    padding-top: 20px;
    padding-bottom: 20px;

}

.menu_item a:hover {
    color: black;
    background-color: orange;
}

#content_section {
    background-color: lightgray;
    display: block;
    /*
    margin-left: auto;
    margin-right: auto;
    width: 90%;
    */
}

#test_button {
    background-color: #3333A2; 
    border: none; margin-top: 2px; 
    margin-bottom: 2px;
}

@media screen and (max-width: 1000px) {
    #menu_section {
        display: block;
        background-color: darkcyan;
    }
    .menu_item {
        font-size: 12px;
        background-color: darkblue;
        padding-top: 5px;
        margin-top: 2px;
        padding-bottom: 5px;
        margin-bottom: 2px;
    }
    #test_button {
        background-color: darkblue;
    }
    #header_section {
        background-color: darkblue;
    }
}