.b1 {
    background-color: #000000;
    width: 100%;
}
.b {
    position: relative;
    width: 1920px;
    height: 800px;
    margin: 0 auto;  
}

.bb1 {
    /*无线测头*/
    width: 200px;
    height: 75px;
    font-size: 38px;
    top: 135px;
    left: 1100px;
    /* border: 1PX solid rebeccapurple;          */
    position: absolute;
    /* font-weight: 900; */
    color: #ffffff;
    font-family:"Microsoft YaHei";
    font-weight: 900;
    

}

.bb2 {
    /*P80*/
    width: 200px;
    height: 55px;
    font-size: 22px;
    top: 135px;
    left: 1260px;
    color: #bf000a;
    /* border: 1PX solid rebeccapurple;          */
    font-weight: 900;
    position: absolute;
    font-weight: 900;
    
}

.bb3 {
    /* 2D/3D/分中找正/测量*/
    width: 450px;
    height: 55px;
    font-size: 24px;
    top: 200px;
    left: 1100px;
    color: #fafafa;
    /* border: 1PX solid rebeccapurple;          */
    position: absolute;
    font-family:"Microsoft YaHei";
    font-weight: 900;
    
}



.bb6 {
    top: 20px;
    left: 550px;
    width: 393px;
    height: 750px;
    position: absolute;
}

.bb6 img {            
    width: 393px;
    height: 750px;
    transition-duration: 1s;
}

.bb7 {
  /*了解详情*/
    width: 120px;   
    height: 30px;
    top: 260px;
    left: 1100px;
    background-color: rgb(255, 136, 0);
    font-size: 18px;  
    color: rgb(0, 0, 0); 
    border: 2px;   
    border-radius: 15px;   
    position: absolute;
    transition-duration: 0.5s;
}
.bb7:hover {    
    background-color: rgb(255, 115, 0);
    color: rgb(255, 255, 255);   
    /* font-size: 19px; */
    transform: scale(1.05);
}
.bb6 img:hover { 
    transform: scale(1.08); 
    
}