body,
p,
dd {
    margin: 0;
    padding: 0;
    font-family: "Helvetica Neue",
        Arial,
        "Hiragino Kaku Gothic ProN",
        "Hiragino Sans",
        Meiryo,
        sans-serif;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    margin: 0;
    padding: 0;
    font-family: inherit;
}


ul,
li {
    margin: 0;
    padding: 0;
    list-style-type: none;
}

button,
a,
.btn {
    margin: 0;
    padding: 0;
    cursor: pointer;
    font-family: inherit;
    font-weight: bold;
    text-decoration: none;
    color: inherit;
    border: none;
    background: none;
}

rt {
    font-size: 0.5em;
}

video {
    transform: rotateY(180deg);
    -webkit-transform: rotateY(180deg);
    -moz-transform: rotateY(180deg);
    opacity: 0.8;
}

body {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}