style.css

img.left{
    position: relative;
    top: 0;
    left: 0;
    /* border: 3px solid #212aad; */
}
img.right{
    position: relative;
    top: 0;
    left: 0;
    /* border: 3px solid #212aad; */
}
body {
        width: 100vw;
        height: 100vh;
        padding: 1rem;
        font-family: Avenir, sans-serif;
        font-size: 112.5%;
        color: #124;
        background-image: radial-gradient(rgba(255, 0, 0, 0.3), rgba(255, 0, 0, 0) 40vw), radial-gradient(rgba(0, 128, 0, 0.3), rgba(0, 128, 0, 0) 40vw), radial-gradient(rgba(0, 0, 255, 0.3), rgba(0, 0, 255, 0) 40vw), radial-gradient(rgba(255, 255, 0, 0.3), rgba(255, 255, 0, 0) 40vw), radial-gradient(rgba(255, 0, 0, 0.3), rgba(255, 0, 0, 0) 40vw);
        background-position: -40vw 14rem, 50% 10rem, 60vw 14rem, -10vw calc(14rem + 20vw), 30vw calc(14rem + 20vw);
        /* background-size: 80vw 80vw; */
        background-repeat: repeat-y;
    }

main {
max-width: 1200px;
margin-right: auto;
margin-left: auto;
}
.cards
{
    display: flex;
    flex-direction: column;
    margin: -1rem;
    list-style: none;
}
@media (min-width: 600px) {
    .cards {
        flex-direction: row;
    }
}
.card:hover {background-color: #463e8e}

.card:active {
    background-color: #463e8e;
    box-shadow: 0 5px #666;
    transform: translateY(4px);
}

.card {
flex: 1;
margin: 1rem;
padding: 1rem;
background-color: white;
border-radius: 0.5rem;
box-shadow: 0 0 6rem rgba(0, 0, 0, 0.1);
}
.card * {
margin-bottom: 1rem;
}

.card--image {
font-size: 6rem;
line-height: 1;
}
.card.-red .card--image {
color: #ff8080;
}
.card.-green .card--image {
color: #80c080;
}
.card.-blue .card--image {
color: #8080ff;
}
.column {
    float: left;
    width: 50%;
    padding: 10px;
}

.basiccolumn {
    float: left;
}

.row:after {
    content: "";
    display: table;
    clear: both;
}

.topnav { 
    background-color: whitesmoke;
    overflow:hidden;
    margin-bottom: 1%;
}

.topnav a {
    float: left;
    color:black;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
    font-size: 17px;
}

.topnav a:hover {
    background-color: lightskyblue;
    color:black;
}

.topnav a.active {
    background-color: grey;
    color:white;
}

figcaption {
    font-style: italic;
    font-size: 16px;
}

h1 {
    margin-bottom: 1%;
    padding: 0.5%;
    text-align: center;
    background-image: linear-gradient(to right, rgba(255,0,0,0), rgba(66, 148, 255, 0.349), rgba(255,0,0,0));
}