.image-electrical{-webkit-mask-image:url(/images/linh-vuc/mask-image-electrical.png);mask-image:url(/images/linh-vuc/mask-image-electrical.png);-webkit-mask-position:50%;mask-position:50%;-webkit-mask-size:contain;-webkit-mask-repeat:no-repeat;mask-repeat:no-repeat;-webkit-mask-size:cover;mask-size:cover}@media (max-width:639px){.image-electrical{-webkit-mask-image:url(/images/linh-vuc/mask-img-electrical-mobile.png);mask-image:url(/images/linh-vuc/mask-img-electrical-mobile.png);-webkit-mask-position:top;mask-position:top;-webkit-mask-size:contain;mask-size:contain}}