/* --------------------- CSS Reset -------------------- */
html,
body,
div,
span,
applet,
object,
iframe,
h1,
h2,
h3,
h4,
h5,
h6,
p,
blockquote,
pre,
a,
abbr,
acronym,
address,
big,
cite,
code,
del,
dfn,
em,
img,
ins,
kbd,
q,
s,
samp,
small,
strike,
strong,
sub,
sup,
tt,
var,
b,
u,
i,
center,
dl,
dt,
dd,
ol,
ul,
li,
fieldset,
form,
label,
legend,
table,
caption,
tbody,
tfoot,
thead,
tr,
th,
td,
article,
aside,
canvas,
details,
embed,
figure,
figcaption,
footer,
header,
hgroup,
menu,
nav,
output,
ruby,
section,
summary,
time,
mark,
audio,
video {
    margin: 0;
    padding: 0;
    border: 0;
    font-size: 100%;
    vertical-align: baseline;
    box-sizing: border-box;
}

article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
menu,
nav,
section {
    display: block;
}

body {
    font-family: arial, helvetica, sans-serif;
    line-height: 1.5;
    font-size: 1.2em;
    color: black;
}

/* ---------------------- Variables ---------------------- */

:root {
    --primary: aqua;
    --primary-light: blue;
    --text-light: white;
}

/* ---------------------- layout ------------------------- */

.container {
    width: 90%;
    max-width: 1200px;
    min-width: 500px;
    margin: 20px auto;
    background-color: var(--primary);
}

header {
    background: var(--primary-light);
    color: var(--text-light);
    padding: 20px;
    text-align: center;
}

footer {
    text-align: center;
    padding: 20px;
    background: var(--primary-light);
    color: var(--text-light);
}

h2 {
    margin: 20px;
}

/* ---------------------- TWO COLUMN LAYOUT ------------------------- */

.months-wrapper {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 100px;
    width: 80%;
    margin: 40px auto;
}

.column {
    flex: 1;
    max-width: 400px;
}

.month-block {
    margin-bottom: 35px;
    text-align: center;
}

.month-block h3 {
    margin-bottom: 10px;
    font-size: 1.3em;
}

.month-block ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.month-block li {
    margin: 6px 0;
}

/* Center and enlarge section heading */
main h2 {
    text-align: center;
    font-size: 2em;
    margin: 30px 0;
}

/* Change page background to primary color */
body {
    background-color: var(--primary);
}