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;
}

/* Swipe Right Button */
smart-button.swipe-right-btn {
    text-transform: none;
    border-radius: 0;
}

smart-button.swipe-right-btn {
    --smart-button-opacity-focus: initial;
    --smart-button-opacity-hover: initial;
    --smart-button-opacity-active: initial;
    width: auto;
    height: auto;
    padding: 0;
    border: none;
    outline: none;
}

smart-button.swipe-right-btn button {
    padding: 0;
}

a {
    display: block;
    width: 200px;
    height: 40px;
    line-height: 40px;
    font-size: 18px;
    font-family: sans-serif;
    text-decoration: none;
    color: #333;
    border: 2px solid #333;
    letter-spacing: 2px;
    text-align: center;
    position: relative;
    transition: all .35s;
}

a span {
    position: relative;
    z-index: 2;
}

a:after {
    position: absolute;
    content: "";
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: #ff003b;
    transition: all .35s;
}

a:hover {
    color: #fff;
}

a:hover:after {
    width: 100%;
}