@font-face {
    font-family: 'Montserrat';
    src: url('fonts/Montserrat-Regular.otf') format('opentype');
    font-style: normal;
    font-weight: normal;
}
:root {
    --header-bg-color: #2f675f;
    --aside-bg-color: #e3e3e3;
    --article-bg-color: #ffffff;
    --dark-txt: #1a0700;
    --light-txt: #d9d9d9;
    --button: #efefef;
}

@page {
    size: A4;
    margin: 0cm;
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Montserrat', 'arial', 'sans-serif';
    background-color: var(--dark-txt);
    color: var(--dark-txt);
    margin: 0;
    font-size: 0.9em;
}
.a4-page {
    width: 21cm;
    height: 29.7cm;
    border-bottom: solid 1px red;
    display: flex;
    flex-direction: column;
    margin: 0 auto;
}
header {
    background-color: var(--header-bg-color);
    color: var(--light-txt);
    display: flex;
    flex-direction: column;
    padding-top: 30px;
    padding-left: 30px;
    padding-right: 30px;
    padding-bottom: 30px;
}
header .img-and-title {
    display: flex;
    justify-content: space-between;
}
header .title {
    padding-left: 30px;
    width: 100%;
}
header h1 {
    font-weight: bold;
    text-align: center;
}
header h2 {
    font-weight: normal;
    text-align: center;
}

section {
    display: flex;
    height: 100%;
}
aside, article {
    display: flex;
    flex-direction: column;
    padding-left: 30px;
    padding-right: 15px;
}
aside {
    background-color: var(--aside-bg-color);
    width: 38.2%;
}
article {
    background-color: var(--article-bg-color);
    width: 61.8%;
}
aside h1, article h1 {
    font-weight: bold;
    font-size: 1.4em;
}
article h2 {
    font-weight: bold;
    font-size: 1.2em;
    margin-top: 0;
    margin-bottom: 8px;
}
article p {
    margin-top: 3px;
    margin-bottom: 3px;
}

.button {
   display: flex;
   flex-wrap: wrap;
}
.button p {
    margin-top: 0;
    margin-right: 10px;
    margin-bottom: 10px;
    padding: 5px;
    border-radius: 7px;
    text-align: center;
    background-color: var(--button);
}

p.date {
    font-style: italic;
}

.element {
    margin-bottom: 30px;
}