button {
 font-size: 17px;
 padding: 0.5em 2em;
 border: transparent;
 box-shadow: 2px 2px 4px rgba(0,0,0,0.4);
 background: dodgerblue;
 color: white;
 border-radius: 4px;
}

button:hover {
 background: rgb(2,0,36);
 background: linear-gradient(90deg, rgba(30,144,255,1) 0%, rgba(0,212,255,1) 100%);
}

button:active {
 transform: translate(0em, 0.2em);
}