* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font: 16px / 1.8 "Hiragino Kaku Gothic Pro", "ヒラギノ角ゴ Pro W3", "メイリオ", Meiryo, "ＭＳ Ｐゴシック", sans-serif;
}
.wrapper {
    width: 700px;
    margin: 0 auto;
}

.sp {
    display: none;
}
@media screen and (max-width: 699px) {
    .sp {
        display: block;
    }
    .wrapper {
        width: 95%;
        margin: 0 auto;
    }
}

img {
    width: 100%;
}

h2 {
    margin-top: 50px;
    padding: 10px;
}

p {
    margin-top: 20px;
    line-height: 1.8;
    color: #444;
}

a {
    color: #478fde;
}

footer {
    padding: 20px;
    text-align: center;
}

footer a {
    font-size: 12px;
}

media screen and (min-width: 700px) {
    footer {
        margin: 50px auto 0;
    }
}