html {
    background-color: #fff;
}

body,
html,
.happy-valentines {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
}

.happy-valentines {
    -webkit-transition: all 1s ease;
    -moz-transition: all 1s ease;
    transition: all 1s ease;
    position: absolute;
    text-align: center;
    top: 100px;
    margin: -0.5em auto 0 auto;
    color: hsl(300, 93%, 11%);
    -webkit-text-shadow: 0 -1px 1px #fff, 0 1px 1px #fff;
    -moz-text-shadow: 0 -1px 1px #fff, 0 1px 1px #fff;
    text-shadow: 0 -1px 1px #fff, 0 1px 1px #fff;
    font-family: 'La Belle Aurore', cursive;
    opacity: 0;
    font-size: 8em;
    -webkit-filter: blur(0.2em);
}

.happy-valentines:hover,
.start {
    opacity: 1;
    font-size: 3em;
    -webkit-filter: blur(0.02em);
    -moz-filter: blur(0.02em);
    filter: blur(0.02em);
}