@import url('https://fonts.googleapis.com/css2?family=Lexend:wght@100..900&family=Merriweather&family=Outfit&display=swap');

*,*:before,*:after{
    box-sizing: border-box;
    padding: 0;
    margin: 0;
}

.merriweather-mainFont{
  font-family: "Merriweather", serif;
  font-optical-sizing: auto;
  font-weight: 400;
  font-style: normal;
  font-variation-settings:
    "wdth" 100;
}

main{
    text-align: center;
    color:white;
}

.mainContent{
    overflow:auto;
    position: relative;
    height:80vh;
}

.mainContent::before{
    content: "";
    position: absolute;
    top:0;
    right:0;
    left:0;
    z-index: -1;

    display: block;
    background-image: url('../img/icsrFRU.png'); 
    background-color: transparent; 
    background-repeat: no-repeat; 
    background-position: center; 
    background-size: cover; 
    width:100%;
    height:100%;
    filter:brightness(50%);
    /* height:600px; */
}

.mainContent h2, .mainContent p{
    padding-top:15px;
}

.sr-only{
    border:0;
    clip:rect(0,0,0,0);
    height:1px;
    margin:-1px;
    overflow:hidden;
    padding:0;
    position:absolute;
    white-space: nowrap;
    width: 1px;
}

.skip-link{
    background:black;
    color:#fff;
    font-weight: 700;
    padding:4px;
    position:absolute;
    transform: translateY(-200%);
}

.skip-link:focus{
    transform: translateY(0%);
}

.skip-link{
    transition: transform 0.3s;
}

#slD{
    border-bottom: 8px #438ACC solid;
}

#srD, #slD{
    border-top:8px #438ACC solid;
}

.container{
  /* max-width: 1900px; */
  margin: 0 auto;
  display: grid;
  /* width: 100vw; */
  height: 100vh;
  grid-template-columns:
   1fr       1fr       1fr       1fr;
  grid-template-areas:
  "head     head     head     head"
  "nav     nav     nav     nav"
  "main     main     main     main"
  "foot     foot     foot     foot";
}

header, nav, aside, footer{
    padding: 2em;
}

footer {
  text-align: center;
}

header {grid-area: head; background:#282b2a3b;}
nav {grid-area: nav; background:#7BE9F6;}
main {grid-area: main; max-height: 100%;}
footer {grid-area: foot; background: #56B4C3;}

ul li{
    list-style: none;
}

#reference ul li{
    margin:10px;
}

ul li a{
    text-decoration: none;
    font-size: 1.3em;
    padding: 10px;
}

ul li a:link{
    color:blue;
}

#reference ul li a:link{
    text-decoration: underline;
}

ul li a:visited{
    color:black;
}

ul li a:hover{
    color:black;
    background:white;
}

ul li a:active{
    color:coral;
}

nav ul {
    display: flex;
    flex-flow: row nowrap;
    justify-content: space-around;
}
    
nav ul li {
    list-style: none
}