body{background-color:#fcfdff;header {
        width: 99.3%;
        background-color: #3b3f5f6e;
        padding: 15px;
        box-shadow: 0 6px 6px #00000041;
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-size: 25px;
        margin: -9px;
        position: sticky;

        a {
            color: rgb(255, 255, 255);
            text-decoration: none;
        }
    }

    .all{
        min-height: 1px;
    }

    .links {
        min-height: 85%;
        float: left;
        width: 12%;
        box-shadow: 3px 9px 2px #A8ABBA;
        font-size: 22px;
        position: sticky;
        margin-top: 0%;

        a {
            color: #000000;
            text-decoration: none;

        }

    }

    #lan_jp {
        margin-top: 2%;
        position: fixed;
        margin-left: 4%;
    }

    #links_top {
        margin-top: 4.5%;
        margin-bottom: 25px;
        position: fixed;
        margin-left: 2.5%;
    }

    #side_main {
        margin-top: 7%;
        margin-bottom: 15px;
        font-size: 20px;
        position: fixed;
        margin-left: 2.5%;

        a {
            color: #525252;
            text-decoration: none;
        }
    }

    #side_start {
        margin-top: 9.5%;
        margin-bottom: 15px;
        font-size: 18px;
        position: fixed;
        margin-left: 4%;

        a {
            color: #727272;
            text-decoration: none;
        }
    }

    #side_rule {
        margin-top: 12%;
        margin-bottom: 15px;
        font-size: 18px;
        position: fixed;
        margin-left: 3%;

        a {
            color: #727272;
            text-decoration: none;
        }
    }

    #side_tools {
        margin-top: 14.5%;
        margin-bottom: 15px;
        font-size: 18px;
        position: fixed;
        margin-left: 1.5%;

        a {
            color: #727272;
            text-decoration: none;
        }
    }

    #side_site {
        position: fixed;
        bottom: 50px;
        margin-left: 45px;
        font-size: 18px;
        text-align: center;


        a {
            color: #31573e;
            text-decoration: none;
        }
    }

    #en {
        margin-top: 17%;
        position: fixed;
        margin-left: 4%;
    }

    #links_tope {
        margin-top: 19.5%;
        margin-bottom: 25px;
        position: fixed;
        margin-left: 3%;
    }

    #side_maine {
        margin-top: 22%;
        margin-bottom: 15px;
        font-size: 20px;
        position: fixed;
        margin-left: 3%;

        a {
            color: #525252;
            text-decoration: none;
        }
    }

    #side_starte {
        margin-top: 24.5%;
        margin-bottom: 15px;
        font-size: 18px;
        position: fixed;
        margin-left: 3.5%;

        a {
            color: #727272;
            text-decoration: none;
        }
    }

    #side_rulee {
        margin-top: 27%;
        margin-bottom: 15px;
        font-size: 18px;
        position: fixed;
        margin-left: 4.5%;

        a {
            color: #727272;
            text-decoration: none;
        }
    }

    #side_toolse {
        margin-top: 29.5%;
        margin-bottom: 15px;
        font-size: 18px;
        position: fixed;
        margin-left: 1.2%;

        a {
            color: #727272;
            text-decoration: none;
        }
    }

    #side_site {
        position: fixed;
        bottom: 50px;
        margin-left: 45px;
        font-size: 18px;
        text-align: center;


        a {
            color: #31573e;
            text-decoration: none;
        }
    }

    .main{
        margin-top: 2%;
        margin-left: 13%;
    }

    #footer {
        width: 100%;
        height: 25px;
        background-color: #c9c9c9;
        margin: 0 auto;
        margin-left: -20px;
        display: flex;
        justify-content: center;
        align-items: center;
        bottom: 0;
        position: fixed;
        padding: 20px;
    }

    .details {
        line-height: 2;
        border: 1px solid #DDD;
        width: 80%;
        margin: 1% 13% 20px;
        padding-left: 1%;
        max-height: 5000px;
        overflow: auto;
        &__summary {
            cursor: pointer;
            background: #F4F4F4;
            margin: 0;
            padding: 10px 16px;
        }

        &__content {
            overflow: hidden;
            margin: 0;
            padding: 16px;

            * {
                transition: line-height 0.4s ease-out 0s, opacity 0.6s 0.3s;
                line-height: 0;
                opacity: 0;
                margin: 0;

                .details[open] & {
                    line-height: 2;
                    opacity: 1;
                }
            }
        }
    }

    #space{
        float: bottom;
        font-size: 30px;
        a{
            color: #ffffff;
        }
    }
}