html {
  overflow: auto;
}

.shop {
    text-align: center;
    margin: 0 auto;
    justify-content: center;
}

p.explanation {
    font-size: 12px;
    font-weight: 700;
}

.square_btn {
    display: block;
    position: relative;
    width: 160px;
    padding: 0.8em;
    text-align: center;
    text-decoration: none;
    color: #1B1B1B;
    background: #fff;
    border: 1px solid #1B1B1B;
    margin: 0 auto;
}

    .square_btn:hover {
        background: #1B1B1B;
        color: #fff;
        cursor: pointer;
        text-decoration: none;
    }

.login {
    width: 80%;
    text-align: left;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .login {
        width: 100%;
        margin: 0 auto;
    }
}

.square_btn_kaiin {
    display: block;
    position: relative;
    width: 120px;
    padding: 0.8em;
    text-align: center;
    text-decoration: none;
    color: #1B1B1B;
    background: #fff;
    border: 1px solid #1B1B1B;
    margin-right: auto;
}

    .square_btn_kaiin:hover {
        background: #1B1B1B;
        color: #fff;
        cursor: pointer;
        text-decoration: none;
    }

.square_btn_change {
    display: block;
    position: relative;
    width: 100px;
    padding: 0.8em;
    text-align: center;
    text-decoration: none;
    color: #1B1B1B;
    background: #fff;
    border: 1px solid #1B1B1B;
    margin-left: auto;
}

    .square_btn_change:hover {
        background: #1B1B1B;
        color: #fff;
        cursor: pointer;
        text-decoration: none;
    }

.shop_table {
    width: 80%;
    margin: 0 auto;
    text-align: center;
}

table.shop_table {
    margin: 0 auto;
}
table.shop_table tr.title {
    background :#DDDDDD;
}
table.shop_table tr.title {
    border-spacing: 0px 100px;
}
    table.shop_table td.cart_photo {
        width: 30%;
    }

table.product_table {
    margin: 0 auto;
    min-width: 60%;
}
    table.product_table td.cart_photo {
        width: 30%;
    }
table.product_table td.button {
    min-width: 10%;
}
    table.product_table td.title {
        min-width: 40%;
    }
table.product_table img.product1 {
    width: 50%;
}

.product_img {
    min-width: 80%;
    margin: 0 auto;
    text-align: center;
}

table.shopList_table img.product1 {
    width: 50%;
}

table.shopList_table {
    margin: 0 auto;
    min-width: 80%;
}
table.shopList_table td.button {
    width: 30%;
}
table.shopList_table td.title {
    min-width: 40%;
}
table.shopList_table td.photo {
    width: 30%;
}

.product_table {
    margin: 0 auto;
    max-width: 50%;
    text-align: center;
}
.product_table_left {
    margin-left: auto;
    max-width: 50%;
    text-align: right;
}
.product_table_right {
    margin-right: auto;
    max-width: 50%;
    text-align: left;
}
.product_table_cart {
    margin: 0 auto;
    display: block;
}

img.img_photo {
    max-width: 30%;
}

@media (max-width: 768px) {
    table.shop_table td.cart_photo {
        min-width: 10%;
    } 
    .shop_table {
        width: 100%;
    }
    .product_img {
        width: 100%;
    }
    table.shopList_table {
        margin: 0 auto;
        min-width: 100%;
    }
}

.explanation_goukei {
    font-size: 12px;
    font-weight: 700;
    text-align: right;
}

input.kazu {
    width: 30px;
    border: 1px solid #808080; /* �g�� */
    border-radius: 0.67em; /* �p�� */
}