body {width: 100%;
    background-color: #ffffff; 
      font-family: Courier new
}
header {
width: 100%;
background-color: #fcfbe1d9;
}
.langchoiceimg {
    width: 11%;
    padding-left: 4%;
    padding-right: 4%;
}
.langchoiceimgde {
    width: 15%;
    padding-right: 2%;
    padding-left: 3%;
}

h1 {font-family: Arial;
    font-weight: bolder; 
    color: green;
}
h2 {font-family: Arial;
    font-weight: bold;  
    color: green;
}
h3 {font-family: Arial;
    font-weight: bold;  
    color: limegreen;
}
h4 {font-family: Arial;
    font-weight: bold;  
    color: lime;
}
a {
    color: forestgreen;
}

.container {
      display: flex;
      flex-direction: column;
      width: 700px;
}
.illustration-image {
    margin: 10px;
    border-radius: 3px; 
    height: 500px;
}