html{ background-color:skyblue } th{ padding:10px; font-size:110%; } td{ text-align:center; padding: 5px ; } input{ padding:10px; margin:5px; margin-top:10px; } table{ margin-top:10px; border: 1px solid black; } th,tr,td{ border:1px solid black; } #crypto_secu{ border: 1px solid black; margin:5%; float:bottom; } body{ font-family:sans-serif; width:80%; margin:auto; font-size:12pt; }