.sb{
  border-radius: 0.5em;
  box-shadow: inset 0 0.0625em 0 0 #f4f4f4, 0 0.0625em 0 0 #efefef, 0 0.125em 0 0 #ececec, 0 0.25em 0 0 #e0e0e0, 0 0.3125em 0 0 #dedede, 0 0.375em 0 0 #dcdcdc, 0 0.425em 0 0 #cacaca, 0 0.425em 0.5em 0 #cecece;
  transition: 0.25s ease;
  touch-action: manipulation;
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);    
}