body {
    background-color: aquamarine;
}

ul {
    list-style-type: none;
    margin: 10px;
    padding: 0px;
}

li {
    display: inline;
    border: solid 2px rgb(149, 17, 17);
    background-color: aquamarine;
    padding: 0px;
}

a {
    text-decoration: none;
    color: rgb(175, 110, 14)
}

a:hover {
    background-color: yellow;
}

li:hover {
    background-color: lawngreen;
}

h1 {
    text-align: center;
}

.flexcontainer {
    text-align: center;   
    width: 95%;
    display: flex;
    align-items: center;


}

.blokje {
    display: flex;
    border: solid 2px;
    margin: 40px;
    background-color: rgb(0, 0, 0);
    width: 45%;
    height: 500px;
}

.blokje div {
    border: solid 2px;
    background-color: rgb(227, 198, 154);
    margin: 5px;
}

#Guido {
    color: rgba(193, 22, 128, 255);
    background-color: rgba(20, 184, 237, 255);
}

#Astrum {
    background-color: rgb(4, 88, 92);
    color: rgb(90, 183, 159)
}

img {
    width: 55%;
    height: 30%;
}

.Container{
    Border: solid 2px;
    width: 45%;
}

.Intro{
    text-align: center;
    background-color: blue;
    color: aliceblue;
}