@charset "utf-8" ;
        article h2 {
            font-size: 35px;
        }
        a.anchor {
            background: #6BFEE2;
        }
        ._bg_card {
            background: #fff;
            border-radius: 0 50px 0 0; 
            box-shadow: 0 8px 20px rgba(0,0,0,0.12);
            padding: 1em;
        }
        .up_img {
            position: relative;
            display: inline-block;
        }
        .up_img img {
            display: block;
            width: 100%;
            height: auto;
            border: 4px solid #6BFEE2;
            box-sizing: border-box;
        }
        .up_img::before {
            content: "";
            position: absolute;
            top: 4px;
            left: 4px;
            width: 70px;
            height: 70px;
            background: #6BFEE2;
            clip-path: polygon(0 0, 100% 0, 0 100%);
            z-index: 2;
        }
        .up_img::after {
            content: "";
            position: absolute;
            right: 4px;
            bottom: 4px;
            width: 70px;
            height: 70px;
            background: #6BFEE2;
            clip-path: polygon(100% 100%, 0 100%, 100% 0);
            z-index: 2;
        }
        .arrow {
        display: block;
        position: relative;
        width: 40px;
        height: 30px;
        background: #6BFEE2;
        margin: auto;
        }
        .arrow::after {
        content: "";
        position: absolute;
        top: -25px;
        right: -30px;
        border-top: 40px solid transparent;
        border-bottom: 40px solid transparent;
        border-left: 40px solid #6BFEE2;
        }

        @media (max-width: 699px) {
        article h2 {
            font-size: 26px;
        }
        .arrow {
            width: 30px;
            height: 30px;
        }
        .arrow::after {
            top: auto;
            right: auto;
            left: 50%;
            transform: translateX(-50%);
            bottom: -40px;
            border-top: 40px solid #6BFEE2;
            border-left: 40px solid transparent;
            border-right: 40px solid transparent;
            border-bottom: none;
        }
        }