.hele_grote_container {
    width: 100%;
    height: 100%;
}
.container {
    border: 1px black solid;
    width: 300px;
    height: 300px;
    position: relative;
}

.knopje1, .knopje2, .knopje3, .knopje4 {
    width: 100px;
    height: 100px;
    margin: auto;
}

.container img {
    max-width: 100%;
    max-height: 100%;
    display: block;
}

.knopje2 {
    width: 100px;
    position: absolute;
    left: 0;
    top: 50%;
    margin-top: -50px;
}

.knopje3 {
    width: 100px;
    position: absolute;
    right: 0;
    top: 50%;
    margin-top: -50px;
}

.knopje4 {
    width: 100px;
    position: absolute;
    bottom: 0;
    left: 50%;
    margin-left: -50px;
}

.mooiplaatje img {
    width: 100px; 
    height: 100px; 
}
.mooiplaatje {
    position: relative;
}

#coordinaten {
    position: absolute;
    color: black;
}