body{
    background-color: black;
    text-align: left;
}
#goiB{
    background-color: green;
    width: 95%;
    height: 200px;
    margin: auto;
}
#goikoM{
    background-color: red;
    width: 95%;
    height: 200px;
    margin: auto;
}   
#zen{
    background-color: yellow;
    width: 95%;
    height: 400px;
    margin: auto;
}
#ezkerM{
    background-color: green;
    width: 30%;
    float: left;
    margin-left: 2%;
    height: 100px;
}
#egitura{
    background-color: blue;
    width: 50%;
    margin-left: 32%;
    height: 100px;
}
#azpikoZ{
    background-color: green;
    width: 95%;
    height: 200px;
    margin: auto;
}