* {
    margin:0px;
    padding:0px;
    box-sizing:border-box;
  }
  body {
    font-family:sans-serif;
  }
  .center {
    position:absolute;
    top:50%;
    left:50%;
    transform:translate(-50%,-50%);
    width:200px;
    padding:20px;
    background:#f5f5f5;
    border-radius:10px;
  }
  .form .form-element {
    margin-bottom:15px;
  }
  .form .form-element label {
    font-size:14px;
    color:#111;
  }
  .form .form-element input {
    width:100%;
    display:block;
    padding:10px;
    margin-top:5px;
  }
  .form .form-element button {
    width:100%;
    height:40px;
    background:#111;
    color:#eee;
    font-size:14px;
    border-radius:10px;
  }
  .qr-img {
    margin-top:10px;
  }
  .qr-img img {
    width:100%;
  }

  
   .modal {
    display:    none;
    position:   fixed;
    z-index:    1000;
    top:        0;
    left:       0;
    height:     100%;
    width:      100%;
    background: rgba(255, 255, 255, 0.253) 
                /*url('http://i.stack.imgur.com/FhHRx.gif') */
                url('813.png') 
                50% 50% 
                no-repeat;
}

body.loading .modal {
    overflow: hidden;   
}

body.loading .modal {
    display: block;
}

html,
body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    background: url("E810h.png")
}

.glow-on-hover {
    width: 220px;
    height: 50px;
    border: none;
    outline: none;
    color: #fff;
    background: #111;
    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: 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; }
}