.but
{
padding:10px;
margin-top:10px;margin-right:10px;
background-color:gainsboro;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
color:black;
cursor:pointer;
}

/* Rectangle Out */
.hvr-rectangle-out {
  display: inline-block;
  -webkit-transform: perspective(1px) translateZ(0);
  transform: perspective(1px) translateZ(0);
  box-shadow: 0 0 1px rgba(0, 0, 0, 0);
  position: relative;
  background: #e1e1e1;
  -webkit-transition-property: color;
  transition-property: color;
  -webkit-transition-duration: 0.3s;
  transition-duration: 0.3s;
}
.hvr-rectangle-out:before {
  content: "";
  position: absolute;
  z-index: -1;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: #2098D1;
  -webkit-transform: scale(0);
  transform: scale(0);
  -webkit-transition-property: transform;
  transition-property: transform;
  -webkit-transition-duration: 0.3s;
  transition-duration: 0.3s;
  -webkit-transition-timing-function: ease-out;
  transition-timing-function: ease-out;
}
.hvr-rectangle-out:hover, .hvr-rectangle-out:focus, .hvr-rectangle-out:active {
  color: white;
}
.hvr-rectangle-out:hover:before, .hvr-rectangle-out:focus:before, .hvr-rectangle-out:active:before {
  -webkit-transform: scale(1);
  transform: scale(1);
}