.border:where(:not(.particle-exclude, .particle-exclude *)) { border-style: solid; border-width: 1px; }
.border--t { border-top-style: solid; border-top-width: 1px; }
.border--r { border-right-style: solid; border-right-width: 1px; }
.border--b { border-bottom-style: solid; border-bottom-width: 1px; }
.border--l { border-left-style: solid; border-left-width: 1px; }
.border--none { border-style: none; border-width: 0; }