.photo-gallery{position:relative}.photo-gallery__list:after{clear:both;content:"";display:block}.photo-gallery__item,.photo-gallery__sizer{width:calc(25% - 15px)}@media screen and (max-width:820px){.photo-gallery__item,.photo-gallery__sizer{width:calc(50% - 10px)}}.photo-gallery__item{float:left;margin-bottom:20px}.photo-gallery__item img{max-width:none;width:100%}