@charset "utf-8";
@import url(https://fonts.googleapis.com/earlyaccess/notosansjp.css);

body,
html {
    width: 100%;
    font-family: 'Noto Sans JP', sans-serif;
    display: flex;
    flex-flow: column;
    min-height: 100vh;
}

.contents {
    width: 100%;
    margin: 0 auto;
    text-align: center;
    flex: 1;
}

.contents iframe {
    margin: 50px auto 30px;
}

h1 {
    font-family: 'Noto Sans JP', sans-serif;
    text-align: center;
    color: #05a0e4;
    font-size: 54px;
    margin-bottom: 20px;
    font-weight: bold;
}

.explanation p {
    text-align: center;
    font-size: 20px;
}

a:hover{
	opacity: 0.7;
}

.sp {
    display: none;
}

.nav-btn ul,.nav-footer ul {
    width: 600px;
    margin: 0 auto;
    list-style: none;
    padding-left: 0;
}

.nav-btn ul li a {
    text-decoration: none;
    display: block;
    margin-bottom: 14px;
    padding: 7px 0;
    border: #05a0e4 solid 2px;
    border-radius: 50px;
    color: #05a0e4;
    font-weight: bold;
    text-align: center;
    font-size: 21px;
}

footer {
    width: 100%;
    background-color: #ececec;
}

.nav-footer {
    justify-content: center;
    text-align: center;
}

.nav-footer ul li {
    color: #7e7e7e;
    padding: 10px 8px;
    display: inline-block;
}

li.kao_logo img {
    width: 50px;
}
li.resesh_logo img {
    width: 50px;
}

@media screen and (max-width: 916px){
    h1 {
    font-size: 40px;
}

@media screen and (max-width: 750px){
    .contents {
    width: 90%;
}
    .contents iframe {
        width: 280px;
        height: 280px;
        margin: 16px 0 0;
}
    h1 {
        font-size: 28px;
        margin: 0 0 8px;
}
    .explanation p {
        margin: 0;
        line-height: 1.4em;
        font-size: 13px;
}
    p.small {
        font-size: 10px;
        margin: 4px 0 10px;
    }
    .sp {
        display: block;
}
    p {
        text-align: center;
        font-size: 10px;
    }
    .nav-btn ul {
        width: 100%;
        text-align: center;
    }
    .nav-btn ul li a {
        margin: 0 auto 8px;
        padding: 2px 0;
        width: 84%;
        font-weight: 600;
        font-size: 17px;
    }
    .nav-footer ul {
    width: 100%;
    }
    .nav-footer ul li {
        font-size: 10px;
        padding: 5px 4px;
    }
    li.kao_logo img {
    width: 48px;
}
    li.resesh_logo img {
    height: 28px;
}
}