body {
background: url(/public/img/main_background.jpg) no-repeat center center fixed;
background-size: cover;
z-index: -1;
}

h1 {
color: aliceblue;
font-size: 5rem;
text-align: center;
padding-top: 20vh;
font-family: arial;
}

.navbar-toggle .icon-bar {
display: block;
width: 22px;
height: 2px;
background-color: rgb(9, 8, 22);
border-radius: 1px;
}

.glow-on-hover {
width: 60px;
height: 50px;
border: none;
outline: none;
color: #fff;
background: transparent;
cursor: pointer;
position: relative;
z-index: 0;
border-radius: 10px;
}

.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: 300%;
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: rgb(9, 8, 22);

}

.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: transparent;
left: 0;
top: 0;
border-radius: 10px;
}

@keyframes glowing {
0% { background-position: 0 0; }
50% { background-position: 300% 0; }
100% { background-position: 0 0; }
}