html {
    background: #e6e9e9;
    background-image: linear-gradient(270deg, rgb(230, 233, 233) 0%, rgb(216, 221, 221) 100%);
    -webkit-font-smoothing: antialiased;
}

body {
    background: #eee;
    box-shadow: 0 0 2px rgba(0, 0, 0, 0.06);
    color: #545454;
    font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    margin: 0 auto;
    max-width: 800px;
    padding: 2em 2em 4em;
}

/* font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; */

h1 {
    margin-top: 1.3em;
    text-align: center;
}

h2,
h3,
h4,
h5,
h6 {
    color: #fff;
    font-weight: 600;
    line-height: 1.3;
    background: #79a;
    box-shadow: rgba(0, 0, 0, 0.2) 0px 2px 2px 0px;
    -moz-box-shadow: rgba(0, 0, 0, 0.2) 0px 2px 2px 0px;
    -webkit-box-shadow: rgba(0, 0, 0, 0.2) 0px 2px 2px 0px;
    box-sizing: border-box;
}

h2 {
    margin-top: 1.3em;
}

a {
    color: #0083e8;
}

b,
strong {
    font-weight: 600;
}

samp {
    display: none;
}

img {
    animation: colorize 2s cubic-bezier(0, 0, .78, .36) 1;
    background: transparent;
    border: 10px solid rgba(0, 0, 0, 0.12);
    border-radius: 4px;
    display: block;
    margin: 1.3em auto;
    max-width: 95%;
}

@keyframes colorize {
    0% {
        -webkit-filter: grayscale(100%);
        filter: grayscale(100%);
    }

    100% {
        -webkit-filter: grayscale(0%);
        filter: grayscale(0%);
    }
}

footer {
	/* display:block;  古めのブラウザ対策のため、一応ブロックレベルに*/
	/* padding:3px; */
	background:#daf5e8;
    font-size: -1px
}