/* color constants */
:root {
    --cd1: #004685;
    --cd2: #b23427;
    --cd3: #d4dcd8;
    --cd1light: #005aab; 
    --cd2light: #d74030; 
    --cd3light: #edf6f2; 
}


/* positioning and size */

body {
    margin: 0 auto;
    max-width: 60em;
    display: flex;
    flex-flow: row wrap;
}

header {
    flex: 0 0 100%;
    display: flex;
    flex-flow: row wrap;  
}

article {
    flex: 1 1 70%;
}

footer {
    flex: 0 0 100%;
}


/* colors, borders aso. */

body {
    font-family: Helvetica, Arial, Geneva, sans-serif;
    padding: 0em;
}

header {
    background: #ffffff;
    border-style: solid;
    border-color: var(--cd3);
    border-width: 0px;
    padding: 0.5em;
}

article {
    background: #ffffff;
    margin: 0em;
    margin-top: 1em;
    padding: 0em;
    padding-left: 1em;
    border-style: solid;
    border-color: var(--cd3);
    border-width: 0px;
}

footer {
    background: #ffffff;
    border-style: solid;
    border-color: var(--cd3);
    border-width: 2px 0px 0px 0px;
    margin-top: 1em;
    padding: 0.5em;
    text-align: center;
}

footer p {
    margin: 0em;
    padding: 0em;
    font-size: 0.8em;
}

h1 {
    margin-top: 0em;
}

a:link, a:visited {
    color: var(--cd1);
}

a:hover, a:active {
    color: var(--cd2);
}

code {
    font-size: 1.2em;
}

h1 {
    font-size: 1.7em;
}

h2 {
    font-size: 1.3em;
}

table {
    border-collapse: collapse;
}

th, td {
    border-width: 1px;
    border-style: solid;
    border-color: var(--cd3);
    padding: 0.3em;
    text-align: left;
}

hr {
    border-width: 1px 0 0 0;
    border-style: solid;
    border-color: var(--cd3);
}

div.important {
    border-width: 3px;
    border-style: solid;
    border-color: var(--cd2light);
    padding: 0.7em;
    font-weight: bold;
}

div.flex-row-center {
    display: flex;
    align-items: center;
}