html,
body,
div,
span,
object,
iframe,
h1,
h2,
h3,
h4,
h5,
h6,
p,
blockquote,
pre,
abbr,
address,
cite,
code,
del,
dfn,
em,
img,
ins,
kbd,
q,
samp,
small,
strong,
sub,
sup,
var,
b,
i,
dl,
dt,
dd,
ol,
ul,
li,
fieldset,
form,
label,
legend,
table,
caption,
tbody,
tfoot,
thead,
tr,
th,
td,
article,
aside,
canvas,
details,
figcaption,
figure,
footer,
header,
hgroup,
menu,
nav,
section,
summary,
time,
mark,
audio,
video {
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
    font-size: 100%;
    vertical-align: baseline;
    background: transparent;
}

/*行の高さはフォントサイズと同じ*/
body {
    line-height: 1;
}

img {
    vertical-align: top;
    font-size: 0;
    line-height: 0;
}

article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
menu,
nav,
section {
    display: block;
}

ol,
ul {
    list-style: none;
}

blockquote,
q {
    quotes: none;
}

/*blockquote要素、q要素の前後にコンテンツが追加されないよう指定*/
blockquote::before,
blockquote::after,
q::before,
q::after {
    content: '';
    content: none;
}

a {
    margin: 0;
    padding: 0;
    font-size: 100%;
    vertical-align: baseline;
    background: transparent;
}

/* change colours to suit your needs */
ins {
    background-color: #ff9;
    color: #000;
    text-decoration: none;
}

/* change colours to suit your needs */
mark {
    background-color: #ff9;
    color: #000;
    font-style: italic;
    font-weight: bold;
}

/*テキストに打ち消し線が付くように*/
del {
    text-decoration: line-through;
}

abbr[title],
dfn[title] {
    border-bottom: 1px dotted;
    cursor: help;
}

/*隣接するセルのボーダーを重ねて表示し、間隔を0に*/
table {
    border-collapse: collapse;
    border-spacing: 0;
}

/* change border colour to suit your needs */
hr {
    display: block;
    height: 1px;
    border: 0;
    border-top: 1px solid #cccccc;
    margin: 1em 0;
    padding: 0;
}

/*縦方向の揃え位置を中央揃えに*/
input,
select {
    vertical-align: middle;
}

/*追加*/

/* clearfix */
.cf {
    zoom: 1;
}

.cf::before,
.cf::after {
    content: " ";
    display: block;
    visibility: hidden;
    clear: both;
}

.cf:after {
    clear: both;
}

.fl {
    float: left;
}

.fr {
    float: right;
}

div,
article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
main,
menu,
nav,
section,
summary {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    -o-box-sizing: border-box;
    -ms-box-sizing: border-box;
    box-sizing: border-box;
}