.brain .page1{
    max-width: 1920px;
    margin: 0 auto;
    height: 778px;
    background: url('../images/products/brain_banner.jpg') no-repeat;
    background-size: cover;

    display: flex;
    justify-content: center;
    align-items: center;
}
.brain .page1 img{
    width: 500px;
}
.brain .page1 .content{
    padding-left: 40px;
    margin-top: -100px;
}
.brain .page1 .content{
    color: #fff;
}
.brain .page1 .content p{
    color: #f2f2f2;
}

.brain .page2{
    display: flex;
    justify-content: center;
    align-items: center;
    background: #dcf8ff;
    height: 778px;
}
.brain .page2  img{
    width: 600px;
}
.brain .page2 h3{
    color: #105ed1;
    margin: 5px ;
}
.brain .page2 h3:nth-child(2){
    margin-bottom: 40px;
}
.brain .page2 p{
    line-height: 30px;
}
.page2 .content{
    padding-right: 40px;
}
.brain .page3{
    display: flex;
    justify-content: center;
    align-items: center;
    background: #2f3740;
    height: 778px;
    color: #fff;
}
.brain .page3 img{
    width: 500px;
}
.brain .page3 .content{
    margin-top: -50px;
}
.brain .page3 .content ul{
    width: 400px;
    padding: 0;
    
}
.brain .page3 .content ul li{
    list-style: circle;
    display: inline-block;
    width: 40%;
    text-align: left;
    line-height: 40px;
}

.brain .page3 .content ul li::before{
    content: '•';
    color: #105ed1;
    padding: 0 5px;
    font-size: 20px;
}

.brain .page4{
    background: #cfeaf1;
    text-align: center;
    color: #105ed1;
    padding: 20px;
    height: 700px;
}
.brain .page4 h3{
    margin: 20px;
    font-size: 30px;
}
.brain .page4 img{
    width: 95%;
    margin: 0 auto;
}
.brain .page5{
    display: flex;
    justify-content: center;
    align-items: center;
    height: 700px;
    color: #fff;
}
.brain .page5 .content{
    padding-left: 50px;
}
.brain .page5 img{
    width: 400px;
}
.brain .page5 ul{
    padding: 0;
}
.brain .page5 ul li{
    border-bottom: 1px solid #d2d2d2;
    padding: 20px;
}
.brain .page5 h3{
    color: #105ed1;
}
.brain .page5 h4{
    color: #4e4f4e;
}
.brain .page5 p{
    color: #787978;
}

@media (max-width: 768px) {
    .brain .page1{
        height: 500px;
        background: url('../images/products/brain_banner.jpg') no-repeat;
        display: flex;
        justify-content: center;
        align-items: center;
    }
    .brain .page1 img{
        width: 100%;
        margin-left: -40px;

    }
    .brain .page1 .content{
        padding-left: 0px;
        margin-top: 0px;
    }
    .brain .page2{
       flex-direction: column;
        height: 520px;
        text-align: center;
    }
    .page2 .content{
        padding-right: 0px;
        text-align: left;
        padding: 10px;
        font-size: 13px;
    }
    .brain .page2  img{
        width: 90%;
    }

    .brain .page3{
        flex-direction: column;
        height: 565px;
        text-align: center;
    }
    .brain .page3 .content{
        text-align: center;
        margin-top: 0px;
    }
    .brain .page3 .content ul{
        width: 100%;
    }
    .brain .page3 img{
        width: 90%;
        margin-left: 10%;
    }
    .brain .page4{
        height: 200px;
    }
    .brain .page4 h3{
        font-size: 20px;
    }
    .brain .page4 img{
        width: calc(100% + 20px);
        margin-left: -10px;
    }
    .brain .page5{
       flex-direction: column;
        height: 800px;
        text-align: center;
    }
    .brain .page5 img{
        width: 90%;
    }
    .brain .page5 .content{
        padding-left: 0px;
    }
}