.part-1 {
    background: url(../../img/engi/1.png);
}

.part-1-blur {
    background: url(../../img/engi/1_blur.png);
}

.part-2 {
    background: url(../../img/engi/2.png);
}
.part-2-blur {
    background: url(../../img/engi/2_blur.png);
}

.part-3 {
    background: url(../../img/engi/3.png);
}
.part-3-blur {
    background: url(../../img/engi/3_blur.png);
}

.part-4 {
    background: url(../../img/engi/4.png);
}
.part-4-blur {
    background: url(../../img/engi/4_blur.png);
}

.part-5 {
    background: url(../../img/engi/5.png);
}
.part-5-blur {
    background: url(../../img/engi/5_blur.png);
}

.part-head {
    background: url(../../img/engi/0.png);
}