.tabla {
position: relative;
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size:12px;
text-align: center;
width: 100%;
padding: 3px 3px;
border: PowderBlue 1px solid;
}


.tabla th {
padding:5px;
font-size: 12px;
background-color: #007bff;
background-repeat: repeat-x;
color: #fff;
border-collapse: separate; border-spacing: 3px;
border-collapse: collapse; border-spacing: 3px;
border-right-width: 1px;
border-bottom-width: 1px;
border-right-style: solid;
border-bottom-style: solid;
border-right-color: #fff;
border-bottom-color: #fff;
font-family: "Trebuchet MS", Arial;
text-align: center;
position: relative;
}