body,html{
    width: 100%;
    height: 100%;
}
main{
    width: 100%;
    height: 100%;
    position: relative;
}
.content{
   position: absolute; 
   top: 50%;
   left: 50%;
   transform: translate(-50%, -50%);
   -webkit-transform: translate(-50%, -50%);
   -ms-transform: translate(-50%, -50%);
}
.logo{
    width: 280px;
}
.lang{
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    margin-top: 40px;
    
}
.lang_icon{
    width: 18px;
    margin-right: 10px;
}
.lang_icon img{
    width: 100%;
}
.lang button{
    background-color:transparent;
    border: none;
    padding-left: 15px;
    padding-right: 15px;
    color: var(--bgcolor2);
}
.lang .lang_left{
    font-family: var(--font_jp_txt);
    color: var(--bgcolor2);
    font-size: 16px;
}
.lang_right{
    font-family: var(--font_en_txt);
    color: var(--bgcolor2);
    font-size: 18px;
}
.lang_border{
    width: 1px;
    height: 12px;
    background-color: var(--bgcolor2);
}