.banner {
    position: relative;
    padding-bottom: calc(760/1920*100%);
    overflow: hidden;
}


.banner img {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    opacity: 0;
}


@keyframes slideBannerA {
    0%   {opacity: 0; transform: scale(1);}
    30%  {opacity: 1; transform: scale(1.05);}
    40%  {opacity: 1;}
    50%  {opacity: 1;}
    65%  {opacity: 0;transform: scale(1.05);}
    90%  {opacity: 0;transform: scale(1);}
    100% {opacity: 0;}
}

@keyframes slideBannerB {
    0%   {opacity: 0; transform: scale(1);}
    30%  {opacity: 1; transform: scale(1.05);}
    40%  {opacity: 1;}
    50%  {opacity: 1;}
    65%  {opacity: 0;transform: scale(1.05);}
    90%  {opacity: 0;transform: scale(1);}
    100% {opacity: 0;}
}

@keyframes slideText {
    0%   {opacity: 0;}
    30%  {opacity: 1;}
    40%  {opacity: 1;}
    50%  {opacity: 1;}
    65%  {opacity: 0;}
    90%  {opacity: 0;}
    100% {opacity: 0;}
}

#b1a {
    animation-name: slideBannerA;
    animation-duration: 16s;
    animation-iteration-count: infinite;
}

#b1b {
    animation-name: slideBannerB;
    animation-delay: 8s;
    animation-duration: 16s;
    animation-iteration-count: infinite;
}

.banner span {
    position: absolute;
    color: #494949;
    font-size: 12px;
    bottom: 10px;
    right: 10%;
    animation-name: slideText;
    animation-duration: 16s;
    animation-iteration-count: infinite;
}
.logo {
    position: absolute;
    top: 30px;
    left: 43.5%;
    width: 13.529%;
    height: 8.37%;
    cursor: pointer;
}
.logo  img{
    width: 100%;
    height: unset;
}

/* 心血管健康全面睇 */
.int_img{
    width: 49%;
    display: inline-block;
}
.int_img img{
    width: 100%;
}
.int_text{
    display: inline-block;
    width: 49%;
    text-align: center;
    vertical-align: middle;
}
.int_text h4{
    color: #ffaa50;
    font-size: 30px;
    font-weight: bold;
}
.int_text p{
    font-size: 18px;
    width: 70%;
    margin: 0 auto;
}

/* 管理 */
.guide{
    background: #FFF6ED;
    padding: 80px 0;
    text-align: center;
}
.guide p{
    font-size: 18px;
    font-weight: normal;
}
.guide_item{
    width: 70%;
    margin: 50px auto 0;
    list-style: none;
    padding-inline-start: 0;
    padding-inline-end: 0;
}
.guide_item li{
    width: 22%;
    display: inline-block;
    margin: 0 5px;
}
.guide_item li img{
    width: 100%;
}

/* form */
#form .header{
    text-align: center;
}
.header h2{
    color: #ffaa50;
    font-size: 30px;
    font-weight: bold;
}
.header ul{
    width: 70%;
    margin: 30px auto 10px;
    list-style: none;
    padding-inline-start: 0;
    padding-inline-end: 0;
}
.header ul li{
    width: 17%;
    display: inline-block;
    padding: 10px;
}
.header ul li img{
    width: 100%;
}
.header ul .jia{
    width: 70px;
    display: inline-block;
    vertical-align: middle;
}
#form .body{
    background-color: #FFF6ED;
}
.note ul{
    padding-inline-start: 17px;
}


.monly{
    display: none;
}

@media (max-width:768px) {
    .donly{
        display: none;
    }
    .monly{
        display: inline-block;
    }
    .banner {
        padding-bottom: 130%;
    }
    .banner img{
        height: auto;
    }
    .banner span {
        right: 10px;
        writing-mode: vertical-rl;
        -webkit-writing-mode: vertical-rl;
        text-orientation: upright;
    }
    .logo {
        top: 12px;
        left: 34%;
        width: 32%;
    }


    /* 心血管健康全面睇 */
    .int_img{
        width: 100%;
    }
    .int_text{
        width: 100%;
        padding: 30px 0;
    }
    .int_text h4{
        font-size: 26px;
    }
    .int_text p{
        font-size: 16px;
        width: 85%;
    }

    /* 管理 */
    .guide{
        padding: 50px 0;
    }
    .guide p{
        width: 85%;
        margin: 0 auto;
        font-size: 16px;
        font-weight: unset;
    }
    .guide_item{
        width: 85%;
        margin: 0 auto;
    }
    .guide_item li{
        width: 45%;
        margin-top: 30px;
    }

    /* form */
    .header h2{
        font-size: 26px;
    }
    .header ul{
        width: 85%;
    }
    .header ul li{
        width: 49%;
    }
    .header ul .jia{
        display: none;
    }


}