#first {
 margin: auto;
 text-align: center;
 vertical-align: middle;
 border-collapse: collapse;
}

#table1cells {
 border-style: solid;
 border-width: thin;
 padding-top: 0.5em;
 padding-bottom: 0.5em;
 padding-right: 0.25em;
 padding-left: 0.25em;
}

th{
 font-style: bold;
}

#second {
 margin: auto;
 caption-side: bottom;
 border-collapse: collapse;
}

#table2cells {
 border-style: solid;
 border-width: medium;
}

#third {
 margin: auto;
 text-align: center;
 vertical-align: middle;
 caption-side: bottom;
 border-collapse: collapse
}

#table3cells {
 border-style: solid;
 border-width: thick
}

#fourth {
 margin: auto;
 font-family: sans-serif;
 caption-side: bottom;
 border-collapse: collapse;
 text-align: center;
 vertical-align: middle;
}

#table4cells {
 border-style: solid;
 border-width: medium;
 padding: 1em;
}