:root {
  --padding: 1.5rem;
  --main-font-size: 0.85rem;
  --small-line-height: 0.95rem;
  --main-line-height: 1rem;
  --title-font-size: 2.5rem;
  --title-line-height: 3rem;
  --color-dark: #3F3A3A;
  --color-light: rgba(224,252,68,0.8);
  --color-text: white;
  --color-background: rgba(206,221,224,0.95) /*#CEDDE0 #383645*/;
  --font-family-title: Arial Narrow, sans-serif;  
  --font-family-book: Bookman, URW Bookman L, serif;
  --font-family-pal: Palatino, URW Palladio L, serif;
  --font-family-times: Times, Times New Roman, serif;
  --font-family-trebu: Trebuchet MS, sans-serif;
}

body{
    background-color:/* white var(--color-background)*/#CEDDE0;
}
h4, h3{
    font-family: var(--font-family-title);
}
p{
    font-size: var(--main-font-size);
    font-family: var(--font-family-trebu);
}
.left{
    position: fixed;
    width: 300px;
}
.left> div{
    font-size: var(--main-font-size);
    line-height: var(--small-line-height);
    background-color: var(--color-background);
    font-family: var(--font-family-trebu);
}
.left h3{
    background-color: var(--color-background);
    width: 200px;
    color: white;
    text-shadow: 0px 0px 4px rgba(0,0,0,1),0px 2px 4px rgba(0,0,0,1),
    0px 0px 4px rgba(0,0,0,1),0px 0px 4px rgba(0,0,0,1),0px 0px 4px rgba(0,0,0,1),
    0px 2px 4px rgba(0,0,0,1),0px 0px 4px rgba(0,0,0,1),0px 0px 4px rgba(0,0,0,1);
}
.center{
    width: 50%;
    min-width: 700px;
    top: 500px;
    position: relative;
    margin: auto;
    display: flex;
    flex-direction: column;
    background-color: var(--color-background);
}
.event{
padding-bottom: 50px;
}
.event h4{
    color: white;
    background-color: black;
    padding: 3px;
}
.event img{
    width: 300px;
    float: left;
    margin-right: 7px;
}
.event summary{
    font-weight: bolder;
    font-family: var(--font-family-pal);
}
.event summary:hover {
    cursor: pointer;
}
.ruban{
    position: fixed;
    left: -300px;
    width: 2100px;
    z-index: -1;
    fill: red;
    font-weight: bolder;
    font-size: 1.6px;
}
.rubanx{
    position: fixed;
    left: 990px;
    width: 900px;
    z-index: -1;
    fill: red;
    font-weight: bolder;
    font-size: 1.6px;
}
.bottom-smartphone{
    display: none;
}
@media screen and (max-width: 600px) {
main{
margin-top: 250px;
}
.left{
    margin-bottom: 200px;
    position: relative;
}
.left> div{
    line-height: var(--small-line-height);
}
.left h3{
    z-index: 4;
    background-color: transparent;
}
.left> h3:nth-child(1){
    position: sticky;
    top: 35px;
}
.left> h3:nth-child(2n){
    position: sticky;
    top: 60px;
}
.event> h4{
    position: sticky;
    top: 110px;
}
.event img{
    float: none;
}
.center{
    width: 90vw;
    min-width: 50vw;   
    margin-top: 200px;
    position: relative;
}
.bottom-smartphone{
    position: relative;
    display: block;
    margin: 600px auto 150px auto;
    padding:2px;
    background-color: red;
    font-family: var(--font-family-title);
    font-weight: 600;
    width: 300px;
    word-break: break-all;
}
.ruban{
    top: -10px;
}
}