.glow-on-hover {
    -webkit-appearance: button;
    -moz-appearance: button;
    appearance: button;
    font-family: cursive;
    margin:5px 20px 5px 20px;
    padding:10px 20px 10px 20px;
    border: none;
    outline: none;
    color: #fff;
    background: #111;
    cursor: pointer;
    position: relative;
    z-index: 0;
    border-radius: 3px;
    font-size:15pt;
}
.glow-on-hover > img{
  vertical-align: middle;
  margin-right:5px;
}

.glow-on-hover:before {
    content: '';
    background: linear-gradient(45deg, #ff0000, #ff7300, #fffb00, #48ff00, #00ffd5, #002bff, #7a00ff, #ff00c8, #ff0000);
    position: absolute;
    top: -2px;
    left:-2px;
    background-size: 400%;
    z-index: -1;
    filter: blur(5px);
    width: calc(100% + 4px);
    height: calc(100% + 4px);
    animation: glowing 20s linear infinite;
    opacity: 0;
    transition: opacity .3s ease-in-out;
    border-radius: 10px;
}

.glow-on-hover:active {
    color: #000
}

.glow-on-hover:active:after {
    background: transparent;
}

.glow-on-hover:hover:before {
    opacity: 1;
}

.glow-on-hover:after {
    z-index: -1;
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: #111;
    left: 0;
    top: 0;
    border-radius: 10px;
}

@keyframes glowing {
    0% { background-position: 0 0; }
    50% { background-position: 400% 0; }
    100% { background-position: 0 0; }
}
.button6{
    display:inline-block;
    padding:0.7em 1.4em;
    border-radius:0.15em;
    box-sizing: border-box;
    text-decoration:none;
    font-family:'Roboto',sans-serif;
    text-transform:uppercase;
    font-weight:400;
    color:#FFFFFF;
    background-color:#3369ff;
    box-shadow:inset 0 -0.6em 0 -0.35em rgba(0,0,0,0.17);
    text-align:center;
    position:relative;
        }
        .button6:active{
    top:0.1em;
        }
        @media all and (max-width:30em){
    .button6{
    display:block;
    margin:0.4em auto;
    }
    } 
    .button6 > img{
        vertical-align: middle;
        margin-right:5px;
      }