.pi_gas_detector .one{
    background: url(../../images/product-details/pi_gas_detector/11.png) center no-repeat;
    background-size: cover
}
.pi_gas_detector .two{
    background: url(../../images/product-details/pi_gas_detector/12.png) center no-repeat;
    background-size: cover;
    z-index: 10;
}
.pi_gas_detector .three{
    background: url(../../images/product-details/pi_gas_detector/13.png) center no-repeat;
    background-size: cover
}
.pi_gas_detector .four{
    background: url(../../images/product-details/pi_gas_detector/14.png) center no-repeat;
    background-size: cover
}
.pi_gas_detector .five{
    background: url(../../images/product-details/pi_gas_detector/15.png) center no-repeat;
    background-size: cover
}
.pi_gas_detector .six{
    background: url(../../images/product-details/pi_gas_detector/16.png) center no-repeat;
    background-size: cover
}
.pi_gas_detector .seven{
    background: url(../../images/product-details/pi_gas_detector/17.png) center no-repeat;
    background-size: cover
}
.pi_gas_detector .eight{
    background: url(../../images/product-details/pi_gas_detector/18.png) center no-repeat;
    background-size: cover
}

.pi_gas_detector .content-bottom{
    position: absolute;
    height:1rem;
    width: 100%;
}
.pi_gas_detector .three .content-box-bg-color{
    background-color: #000000;
}

.pi_gas_detector .product-parameters-img{
    padding: 0.5rem;
    border-bottom: 1px solid #B2B2B2;
    margin-bottom: 0.5rem;
}
.pi_gas_detector .product-parameters-img h5{
    margin-bottom: 0.5rem;
}
.pi_gas_detector .product-parameters-img img{
    margin: auto;
}