body{
    background-image: url(pictures/loginimg2.jpg);
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: 100%;
    background-position: bottom;
}
.main_nav_icon li:first-child a{
    border-bottom: solid 9px var(--color_greengray);
}
.row{
    width: 95%;
    height: 100vh;
    align-items: center;
    justify-content: center;
}
#loginCard{
    display: block;
}
#signupCard, #center, #memberCard{
    display: none;
}

.card{
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.75);
    border-radius: 10px;
    box-shadow: 0 0 10px #d9d9d9;
    padding: 10%;
}
.card>a{
    float: right;
    position: absolute;
    right: 0;
    top: 0;
    margin: 5% 0;
}
.card>a img{
    width: 60%;
}
.card_top{
    display: flex;
    width: 100%;
    justify-content: space-around;
    text-align: center;
}
.card li{
    cursor: pointer;
}
.card a{
    opacity: .7;
}
.card a:hover{
    opacity: 1;
}
#loginCard .login a, #signupCard .signup a, #memberCard h2, #center h2{
    font-weight: 900;
    opacity: 1;
} 
.card_top h2:nth-of-type(1){
    font-size: 1.2rem;
    line-height: 2;
}
.card_top h2:nth-of-type(2){
    font-size: .6rem;
    line-height: 2;
}
.card_top h2:nth-of-type(1)::after{
    content: '　'; 
    border-bottom-width: 1px;
    border-bottom-style: solid;
    border-color: gray;
    position: absolute;
    width: 120px;
    transform: translate(-65%, 0);
}
#memberCard h2:after, #center h2:after{
    transform: translate(-80%, 0);
}
.card_body{
    margin-top: 10%;
}
.card_body input{
    background-color: inherit;
    border-radius: 5px;
    width: 100%;
    margin: 10px auto;
    padding: 10px;
    outline: none;
    border: none;
}
.card_body input:not(:last-child){
    width: 80%;
}
.card_body input:focus{
    box-shadow: 2px 2px 2px rgba(212, 212, 212, 0.8);
}
.card_body input:last-child{
    cursor: pointer;
    width: 20%;
    color: white;
    background-color: var(--color_yellow);
    border: solid .5px var(--color_yellow);
    margin: 5% 2%;
}
.card_body input:last-child:hover{
    background-color: transparent;
    color: var(--color_yellow);
}
.card_body input:last-child:active{
    box-shadow: inset 2px 2px 2px var(--color_yellow);
}
.register .card_body a{
    font-size: .8rem;
    float: right;
}
.card_foot{
    text-align: center;
    margin-top: 15px;
    padding-top: 15px;
    border-top: solid 1px gray;
}
.card_foot .icon{
    width: 60%;
    padding-top: 5%;
    margin: auto;
    display: flex;
    justify-content: space-between;
}
#center .card{
    margin: 5% 0;
}
#memberCard .card_body li{
    cursor:auto;
}
#memberCard .card_body li:first-child{
    font-size: 1.2rem;
    line-height: 2.4rem;
}
#memberCard .card_body li+li{
    font-size: 1rem;
    line-height: 2rem;
}
#memberCard a, #center a{
    float: none;
    cursor:pointer;
}
#center .card{
    padding: 3%;
}
#center .card_body{
    margin-top: 3%;
}
table{
    width: 90%;
    text-align: center;
}
tr{
    line-height: 2.2rem;
}
th{
    font-size: 1.2rem;
    font-weight: 700;
}

@media screen and (max-width: 1023px) {
    body{
        background-blend-mode: multiply;
        background-color: #F0F3EA;
        padding-top: 120px;
        padding-bottom: 50%;
    }
    .row{
        height: 100%;
    }
    .card{
        width: 90%;
        padding: 5%;
    }
    #center .card{
        padding: 0;
        width: 100%;
    }
    table{
        width: 100%;
    }
    tr th{
        font-size: 1rem;
    }
    .card_body input:last-child{
        height: 5vh;
    }
}