Article.css

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-image: url('image/bg1.jpg');
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: cover;
}

header {
    background-color: #1052c4;  
    padding: 5px 5px 5px 0px; 
    /* top,right,bottom,left */
    /* padding-left: 20px; */
    text-align:left;
    font-size: 18px;
    /* box-shadow: 4px 4px; */
}

nav {
    padding-left: 20px;
    position: fixed;
    width: 100%;
    background-color: rgba(31, 84, 182, 0.3);
}

nav ul {
    list-style-type: none;
    padding: 0;    
}

nav ul li {
    display: inline;
    margin-right: 10px;
}

nav ul li a {
    padding-right: 20px;
    text-decoration: none;
    color: white;
   
}

nav ul li a:hover {
    color: #000000;
}

section {
    padding: 20px;
    display: flex;
    flex-wrap: wrap;
    flex: 2;
}

h1, h2, h3 {
    color: #333;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

h1 {
    font-size: 2.5em;
}

h2 {
    font-size: 2em;
}

h3 {
    font-size: 1.5em;
}

a {
    color: black;
    text-decoration: unset;
}

li {
    list-style-type: none;
}

article {
    padding: 10px;
    margin-bottom: 20px;
   
    
}

.underligned{

    text-decoration: underline;
}

article img {
    padding: 0px;
    display: block;
    margin-left: auto;
    margin-right: auto;
    
}
#big{
    width: 100%;
    height: auto;
}
#small{
    width: 100%;
    height: auto;
}

footer {
    background-color: #e1e0e0;
    padding:0mm;
    text-align: center;
}

.vsmallArt{
    width: 31%;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.smallArt{
    width: 47%;
    display: block;
    margin-left: auto;
    margin-right: auto; 
}

.bigArt{
    width: 100%;
    margin: 5px;    
}

/* small{ 
    box-align: center;
 } */

/* ---------- Scroller ----------*/

div.scrollmenu{
    background-color: none;
    overflow: auto;
    white-space: nowrap;
}

div.scrollmenu a{
    width: 20%;
    display: inline-block;
    color: black;
    text-align: center;
    white-space: normal;
    padding: 0px;
    text-decoration: none;
    margin: 5px;
    border: 1px solid rgb(212, 203, 203);
    background-color:  rgba(238, 231, 231, 0.5);
}

div.scrollmenu a:hover {
    box-shadow: 1px 1px 1px 1px;
    transition-duration: 0.2s;
}

#tsmall{
    margin-top: 5px;
    width: 80%;
    height: auto;
}

@media screen and (min-width: 831px) {
    
.fixed{
    display: flex;
    flex-wrap: wrap;
    flex: 4;
}

.sideLeft{
    flex: 0.8;
}

.sideMid{
    flex: 2.4;
}

.sideRight{
    flex: 0.8;
}

}

@media screen and (max-width: 600px) {
 nav {
        overflow-x: scroll;
        white-space: nowrap;
    } 

    nav ul li a{
        display: inline-block;
    }

div.scrollmenu a{
    width: 40%;
}
}

.sideRight article:hover{
    box-shadow: 2px 2px 2px 2px;
    transition-duration: 0.2s;
    
}