body {
    background: #fff;
}

.button-demo {
    margin-top: 20px;
    margin-left: 20px;
}

.button-demo label {
    font-size: 18px;
    font-weight: normal;
    font-family: auto;
    color: black;
}

.demo-buttons-group {
    margin-top: 20px;
}

/* Simple Button */
.button {
    width: auto;
    height: auto;
    border: none;
    border-radius: 0;
    font-family: Rubik, sans-serif;
    font-size: 16px;
    font-weight: bold;
    padding: 9px 26px;
    box-shadow: 0px 0px 12px -2px rgba(0, 0, 0, 0.5);
    line-height: 1.25;
    background: #FC6E51;
    text-decoration: none;
    color: white;
    font-size: 16px;
    letter-spacing: .08em;
    text-transform: uppercase;
    position: absolute;
    transition: background-color .6s ease;
    overflow: hidden;
    -moz-user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

.button button {
    pointer-events: none;
}

.button:after {
    content: "";
    position: absolute;
    width: 0;
    height: 0;
    top: 50%;
    left: 50%;
    -webkit-transform-style: flat;
    transform-style: flat;
    -webkit-transform: translate3d(-50%, -50%, 0);
    transform: translate3d(-50%, -50%, 0);
    background: rgba(255, 255, 255, 0.1);
    border-radius: 100%;
    transition: width .3s ease, height .3s ease;
}

.button:active:after {
    width: 200px;
    height: 200px;
}