#hdau .hdau_split {
        width: 900px;
    }

    #hdau .background {
        margin: 2% 0 7% 0;
        background-color: #212121 !important;
    }

    #hdau .inner {
        padding: 0px 24px;
    }

    /* section_btn_group */
    #hdau .section_btn_group {
        display: flex;
        justify-content: center;
    }

    #hdau  .section_btn {
        margin: 0 60px !important;
        cursor: pointer;
        border-bottom: 1.5px solid #000000;
        padding: 20px 0;
        color: #909090 !important;
    }

    #hdau .section_btn:hover {
        border-bottom: 2px solid #ffffff;
        color: #ffffff !important;
    }

    #hdau .section_btn.active {
        border-bottom: 2px solid #ffffff;
        color: #ffffff !important;
    }

    /* section內部 */
    #hdau  .section {
        padding: 30px 0;
        display: none;
    }

    #hdau  .section.active {
        display: block;
    }

    #hdau  .section .link {
        color: #D92F2F !important;
    }

    #hdau .section .padding {
        padding-bottom: 46px;
    }
    #hdau p {
        margin: 24px 0px;
    }

    #hdau .btn_group {
        display: flex;
        justify-content: center;
        margin: 45px 0 25px 0;
        flex-wrap: wrap;
    }

    #hdau .btn {
        margin: 10px 16px !important;

    }

    #hdau .btn_r {
        background: linear-gradient(180deg, #830808 0%, #d92f2f 49%, #8d0a0a 100%);
    }

    #hdau  .btn_g {
        background: #606060;
    }

    @media screen and (max-width: 600px) {
        #hdau  .background{
        margin: 2% 0 15% 0;
        }
        #hdau  .section_btn_group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            margin-bottom: 20px;
        }
        #hdau .section_btn {
			width: 100%;
			margin: 0!important;
			margin-bottom:20px  !important;
			padding: 8px 0;

        }
        #hdau  .btn_group {
        margin: 0;
		margin-top:30px ;
		

	}
	#hdau .section .padding {
        padding: 0px!important;
    }
  
	
    }