a.ui-button {
  font-size: 12px;
  font-weight: 700;
  line-height: 1.5;
  width: 270px;
  position: relative;
  display: inline-block;
  padding: 3px 3px;
  cursor: pointer;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
  text-align: center;
  text-decoration: none;
  letter-spacing: 0.1em;
  border-radius: 0.5rem;
}

/* blue button */
a.ui-button-solid-blue {
  color: white;
  border-top: 2px solid lightcyan;
  border-right: 2px solid blue;
  border-bottom: 2px solid mediumblue;
  border-left: 2px solid #868888;
  border-radius: 7px;
  background-image: linear-gradient(lightcyan 5%, #3574db 20%, #2574db 50%);
  text-shadow: 0 0 5px darkblue, 0 0 5px darkblue, 0 0 5px darkblue, 0 0 5px darkblue, 0 0 5px darkblue;
}
a.ui-button-solid-blue:hover {
  background-image: linear-gradient(lightcyan 5%, lightskyblue 20%);
}

/* red button */
a.ui-button-solid-red {
  color: white;
  border-top: 2px solid lightgray;
  border-right: 2px solid silver;
  border-bottom: 2px solid gray;
  border-left: 2px solid dimgray;
  border-radius: 7px;
  background-image: linear-gradient(lightyellow 5%, #b48080 20%, #A70000 50%);
  text-shadow: 0 0 5px darkblue, 0 0 5px red, 0 0 5px red, 0 0 5px red, 0 0 5px red;
}
a.ui-button-solid-red:hover {
  background-image: linear-gradient(pink 5%, salmon 20%);
}

/* black button */
a.ui-button-solid-black {
  color: white;
  border-top: 2px solid lightgray;
  border-right: 2px solid silver;
  border-bottom: 2px solid gray;
  border-left: 2px solid dimgray;
  border-radius: 7px;
  background-image: linear-gradient(lightgray 5%, #404040 20%, #202020 50%);
  text-shadow: 0 0 5px darkblue, 0 0 5px black, 0 0 5px black, 0 0 5px black, 0 0 5px black;
}

a.ui-button-solid-black:hover {
  background-image: linear-gradient(lightgray 5%, gray 20%);
}