* {
    box-sizing: border-box;
  }

:root {
    --main-bg-color: gray;
    --header-bg-color: rgb(50, 50, 50); 
}

body {
    font-family: sans-serif;
    margin: 0 0 0 0;
    background-color: var(--main-bg-color);
}

a {
    color: white;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 15pt;
    margin-left: 20px;
    margin-right: 20px;
    text-decoration: none;
    transition-duration: 300ms;
}

a:hover {
    color: red;
}

#content {
    color: white;
    display: block;
    width: 45%;
    margin-left: auto;
    margin-right: auto; 
    padding-bottom: 300px;
}

@media only screen and (max-width: 750px) {
    content {
        width: 60%; 
    }  
}

@media only screen and (max-width: 650px) {
    #content {
        width: 80%; 
    }    
} 

#siteHeader {
    display: block;
    /*justify-content: space-around;*/
    width: 100%;
    background-color: var(--header-bg-color);
    padding: 10px;
}

#logoContainer {
    display: flex;
    justify-content: space-around;
    width: 100%;
    margin: 0 0px 0px 0px;
}

#navigation {
    position: sticky;
    top: 0;
    display: grid;
    gap: 20px;
    grid-template-columns: repeat(auto-fit, minmax(168px, auto));
    justify-content: center;
    text-align: center;
    white-space: nowrap;        
    background-color: var(--header-bg-color);
    padding: 15px 0 15px 0;
}

#siteFooter {
    position: fixed;
    /*height: 10vh;*/
    bottom: 0;
    width: 100vw;
    justify-content: space-around;
    background-color: var(--header-bg-color);
    padding-top: 20px;
    padding-bottom: 20px;
}

#footerContainer {
    display: grid;
    gap: 20px;
    justify-content: center;
    text-align: center;
    white-space: nowrap; 
    margin: 0 10px 0 10px;
}

@media only screen and (min-width: 650px) {
    #footerContainer {        
        grid-template-columns: repeat(3, 1fr);
    }    
} 

@media only screen and (max-width: 650px) {
    #footerContainer {        
        grid-template-columns: repeat(1, 1fr);
    }    
}