.taab{
display: inline-block;
background: rgba(255,255,255,0.5);
border: 1px solid #e8e8e8;
width: 160px;
font-family: Calibri;
text-transform: uppercase;
font-size: 11px;
letter-spacing: 0.5px;
margin-left: 3px;
margin-right: 3px;
margin-top: 6px;
transition:0.3s linear;
height:14px;
line-height:14px;
}

.taab:hover{
letter-spacing:1.5px;
transition:0.3s linear;
}