body{
    margin: 0;
    padding: 0;
}
.header{
            background: #1e7fc6;
            color:#fff;
            font-weight: bold;
            padding: 24px;
            text-align: center;
        }
        .footer{
            background: #1e7fc6;
            color:#fff;
            padding: 16px;
            text-align: center;
            bottom: 0px;
            width: 100%;
            box-sizing: border-box;
            margin-top: 36px;
        }
        .contents_box{
            display: flex;
            flex-wrap: wrap;
            justify-content: space-around;
            margin: 0 auto;
            max-width: 600px;
            
        }
        .contents_box a{
            width: 280px;
            text-align: center;
            background: #1960e0;
            font-size: 24px;
            text-decoration: none;
            color: #fff;
            border-radius: 8px;
            margin-top: 32px;
        }
        .contents_box2{
            display: flex;
            flex-wrap: wrap;
            justify-content: space-around;
            margin: 0 auto;
            max-width: 500px;
        }
        .contents_box2 a{
            width: 230px;
            text-align: center;
            background: #48b7e5;
            font-size: 18px;
            text-decoration: none;
            color: #fff;
            margin-top: 24px;
        }
.contents_box3_a{
    margin: 0 auto;
            width: 230px;
            text-align: center;
            background: #48b7e5;
            font-size: 18px;
            text-decoration: none;
            color: #fff;
            margin-top: 24px;
    display: block;
    padding: 16px;
}
        .l_text{
            font-size:1.2em;
            text-align: center;
            margin-top: 56px;
        }
.contents_box3{
    width: 600px;
    margin: 0 auto;
    padding-left: 16px;
    padding-right: 16px;
    box-sizing: border-box;
}
.iframe{
    max-width: 600px;
    height: 450px;
    margin: 0 auto;
    width: 100%;
    display: block;
}
.re{
    background: #48b7e5;
    padding: 8px;
    width: 150px;
    text-align: center;
    color: #fff;
    margin: 0 auto;
    margin-top: 36px;
    text-decoration: none;
    display: block;
}
        @media screen and (max-width: 769px){
            .contents_box{
                display: block;
                padding: 0px 16px;
                box-sizing: border-box;
            }
            .contents_box a {
                font-size: 24px;
                display: block;
                width: 100%;
                padding: 8px 0px;
            }
            .footer{
                position: relative;
                bottom: 0px;
                padding-bottom: 24px;
                box-sizing: border-box;
                height: 80px;
            }
            .contents_box2{
                display: block;
                padding: 0px 16px;
                box-sizing: border-box;
                margin-bottom: 56px;
            }
            .contents_box2 a{
                width: 80%;
                display: block;
                font-size: 16px;
                padding: 4px 0px;
                margin: 0 auto;
                margin-top: 24px;
            }
        }