body {
    margin: 0;
    padding: 0;
}



headerr {
    justify-content: space-between;
    align-items: center;
    padding: 1.4em;
    background: transparent;
}

.sp_nav {
    display: hidden;
    align-items: center;

    @media screen and (max-width: 1000px) {
        nav {
            display: inline;
        }
    }

}


.menu__box {
    display: flex;
    flex-direction: row;
    list-style-type: none;

    @media screen and (max-width: 1000px) {
        flex-direction: column;
        position: absolute;
        visibility: hidden;
        top: 0;
        left: 0;
        width: 100%;
        height: fit-content;
        margin: -600px 0 0 0;
        padding: 0.6em 0;
        text-align: center;
        background-color: #151f45;
        box-shadow: 1px 0 6px rgba(0, 0, 0, .2);
        z-index: 10;
        transition-duration: 0.5s;
    }

}


.menu__item {
    display: none;

    @media screen and (max-width: 1000px) {
        display: block;
        padding: 16px 24px;
        color: #ffffff;
        font-size: 19px;
        font-weight: 500;
        transition-duration: 0.5s;
        text-decoration: none;
        font-family: 'Roboto', 'Noto Sans JP', sans-serif;

        &:hover {
            background-color: #4f5464;
        }

    }

}

#menu__toggle {
    opacity: 0;
    float: right;
    padding: 1.4em;


    &:checked~.menu__btn>span {
        transform: rotate(45deg);
    }

    &:checked~.menu__btn>span::before {
        top: 0;
        transform: rotate(0);
        background: #ffffff;
    }

    &:checked~.menu__btn>span::after {
        top: 0;
        transform: rotate(90deg);
        background: #ffffff;
    }

    &:checked~.menu__box {
        visibility: visible;
        left: 0;
        margin: 0;
    }

}

.menu__btn {
    transition-duration: 0.25s;
    box-sizing: border-box;
    display: flex;
    float: right;
    background-color: #151f45;
    align-items: center;
    position: absolute;
    border-radius: 0px;
    right: 0;
    width: 26px;
    height: 26px;
    margin: 2%;
    padding: 3%;
    cursor: pointer;
    z-index: 301;

    span {
        display: inline-block;
        position: absolute;
        width: 70%;
        height: 1px;
        top: 47%;
        right: 15%;
        background-color: #ffffff;

        &::before {
            display: inline-block;
            position: absolute;
            width: 100%;
            height: 0.5px;
            background-color: #ffffff;
            content: '';
            top: -6px;
            transition-duration: 0.25s;
        }

        &::after {
            display: inline-block;
            position: absolute;
            width: 100%;
            height: 1px;
            background-color: #ffffff;
            content: '';
            top: 6px;
            transition-duration: 0.25s;
        }

    }

    @media screen and (min-width: 1000px) {
        display: none;
    }

}