article {
    text-align: center;
}
header {
    text-align: center;
    font-weight: bold;
    margin-bottom: 20px;
}

section {
    border: 3px solid black;
   
}

#firstsection {
    background-color: rgb(231, 216, 8);
    padding: 20px;
}

#secondsection {
    color: green;
}

#thirdsection {
    background-color: rgb(231, 216, 8);
    padding: 20px;
}

#fourthsection {
    color: green;
}
#fifthsection {
    background-color: rgb(231, 216, 8);
    padding: 20px;
}

#sixthsection {
    color: green;
}
.center {
    text-align: center;
    font-weight: bold;
    background-color: white;
}


footer {
    border: 1px solid black;
    height: 20px;
    padding: 5px;
}

.SectionMargin {
    margin-bottom: 50px;
}