performance - Website with a lot of Images and very slow -

performance - Website with a lot of Images and very slow -

my website in general has lot of images load. homepage has few images, yet everytime test website through website speed tests, tries load images on entire website. why doesn't load images on home page? why images on subpages seek load on initial home page?

near top of style.css file, have rule apparently preloads 130 images portfolio folder:

body:after { content: url(../images/portfolio/d-b-1-h.png) url(../images/portfolio/d-b-1-bw.png) url(../images/portfolio/d-b-2-h.png) url(../images/portfolio/d-b-2-bw.png) url(../images/portfolio/d-b-3-h.png) url(../images/portfolio/d-b-3-bw.png) url(../images/portfolio/d-b-4-h.png) url(../images/portfolio/d-b-4-bw.png) url(../images/portfolio/d-b-5-h.png) url(../images/portfolio/d-b-5-bw.png) url(../images/portfolio/d-b-6-h.png) url(../images/portfolio/d-b-6-bw.png) url(../images/portfolio/d-b-7-h.png) url(../images/portfolio/d-b-7-bw.png) url(../images/portfolio/d-b-8-h.png) url(../images/portfolio/d-b-8-bw.png) url(../images/portfolio/d-c-1-h.png) url(../images/portfolio/d-c-1-bw.png) url(../images/portfolio/d-c-2-h.png) url(../images/portfolio/d-c-2-bw.png) url(../images/portfolio/d-c-3-h.png) url(../images/portfolio/d-c-3-bw.png) url(../images/portfolio/d-c-4-h.png) url(../images/portfolio/d-c-4-bw.png) url(../images/portfolio/d-c-5-h.png) url(../images/portfolio/d-c-5-bw.png) url(../images/portfolio/d-c-6-h.png) url(../images/portfolio/d-c-6-bw.png) url(../images/portfolio/d-c-7-bw.png) url(../images/portfolio/d-c-7-h.png) url(../images/portfolio/d-c-8-bw.png) url(../images/portfolio/d-c-8-h.png) url(../images/portfolio/d-c-9-bw.png) url(../images/portfolio/d-c-9-h.png) url(../images/portfolio/d-c-10-bw.png) url(../images/portfolio/d-c-10-h.png) url(../images/portfolio/d-c-11-bw.png) url(../images/portfolio/d-c-11-h.png) url(../images/portfolio/d-cs-1-h.png) url(../images/portfolio/d-cs-1-bw.png) url(../images/portfolio/d-cs-2-h.png) url(../images/portfolio/d-cs-2-bw.png) url(../images/portfolio/d-cs-3-h.png) url(../images/portfolio/d-cs-3-bw.png) url(../images/portfolio/d-cs-4-h.png) url(../images/portfolio/d-cs-4-bw.png) url(../images/portfolio/d-cs-5-h.png) url(../images/portfolio/d-cs-5-bw.png) url(../images/portfolio/d-cs-6-h.png) url(../images/portfolio/d-cs-6-bw.png) url(../images/portfolio/d-cs-7-bw.png) url(../images/portfolio/d-cs-7-h.png) url(../images/portfolio/d-p-1-h.png) url(../images/portfolio/d-p-1-bw.png) url(../images/portfolio/d-p-2-h.png) url(../images/portfolio/d-p-2-bw.png) url(../images/portfolio/d-p-3-h.png) url(../images/portfolio/d-p-3-bw.png) url(../images/portfolio/d-p-4-h.png) url(../images/portfolio/d-p-4-bw.png) url(../images/portfolio/d-p-5-h.png) url(../images/portfolio/d-p-5-bw.png) url(../images/portfolio/d-p-6-h.png) url(../images/portfolio/d-p-6-bw.png) url(../images/portfolio/d-p-7-bw.png) url(../images/portfolio/d-p-7-h.png) url(../images/portfolio/d-p-8-bw.png) url(../images/portfolio/d-p-8-h.png) url(../images/portfolio/d-p-9-bw.png) url(../images/portfolio/d-p-9-h.png) url(../images/portfolio/d-p-10-bw.png) url(../images/portfolio/d-p-10-h.png) url(../images/portfolio/d-p-11-bw.png) url(../images/portfolio/d-r-1-h.png) url(../images/portfolio/d-r-1-bw.png) url(../images/portfolio/d-r-2-h.png) url(../images/portfolio/d-r-2-bw.png) url(../images/portfolio/d-r-3-h.png) url(../images/portfolio/d-r-3-bw.png) url(../images/portfolio/d-r-4-h.png) url(../images/portfolio/d-r-4-bw.png) url(../images/portfolio/d-r-5-h.png) url(../images/portfolio/d-r-5-bw.png) url(../images/portfolio/d-r-6-h.png) url(../images/portfolio/d-r-6-bw.png) url(../images/portfolio/d-r-7-bw.png) url(../images/portfolio/d-r-7-h.png) url(../images/portfolio/d-r-8-bw.png) url(../images/portfolio/d-r-8-h.png) url(../images/portfolio/d-r-9-bw.png) url(../images/portfolio/d-r-9-h.png) url(../images/portfolio/d-r-10-bw.png) url(../images/portfolio/d-r-10-h.png) url(../images/portfolio/d-r-11-bw.png) url(../images/portfolio/d-v-1-h.png) url(../images/portfolio/d-v-1-bw.png) url(../images/portfolio/d-v-2-h.png) url(../images/portfolio/d-v-2-bw.png) url(../images/portfolio/d-v-3-h.png) url(../images/portfolio/d-v-3-bw.png) url(../images/portfolio/d-v-4-h.png) url(../images/portfolio/d-v-4-bw.png) url(../images/portfolio/d-v-5-h.png) url(../images/portfolio/d-v-5-bw.png) url(../images/portfolio/d-v-6-h.png) url(../images/portfolio/d-v-6-bw.png) url(../images/portfolio/d-v-7-bw.png) url(../images/portfolio/d-v-7-h.png) url(../images/portfolio/d-w-1-h.png) url(../images/portfolio/d-w-1-bw.png) url(../images/portfolio/d-w-2-h.png) url(../images/portfolio/d-w-2-bw.png) url(../images/portfolio/d-w-3-h.png) url(../images/portfolio/d-w-3-bw.png) url(../images/portfolio/d-w-4-h.png) url(../images/portfolio/d-w-4-bw.png) url(../images/portfolio/d-w-5-h.png) url(../images/portfolio/d-w-5-bw.png) url(../images/portfolio/d-w-6-h.png) url(../images/portfolio/d-w-6-bw.png) url(../images/portfolio/d-w-7-bw.png) url(../images/portfolio/d-w-7-h.png) url(../images/portfolio/m-b-2-bw.png) url(../images/portfolio/m-c-2-bw.png) url(../images/portfolio/m-cs-3-bw.png) url(../images/portfolio/m-cs-5-bw.png) url(../images/portfolio/m-p-3-bw.png) url(../images/portfolio/m-r-3-bw.png) url(../images/portfolio/m-v-2-bw.png) url(../images/portfolio/m-w-3-bw.png); display: none; }

seems should either remove or trim downwards or move portfolio pages isn't loaded unnecessarily.

image performance website