#semestr1 {
    height:  750px;
    width: 45%;
    color:blue;
    margin: 20px;
    background-color:lavender;
    font-size: x-large;
}

#wyklady {

    height:  150px;
    width: 60%;
    background-color: beige;
    margin: 20px;
}

#wyklady a {
    color:brown;
}

#lab {
    height:  480px;
    background-color:honeydew;
    margin: 20px;
    width: 60%;
    
}

#lab a {
    color:darkblue;
}