photobase {
display: grid;
grid-template-columns: 1fr 1fr 1fr 1fr;
grid-template-areas: 
      "Row1a Row1b Row1c Row1d"
      "Row2a Row2b Row2c Row2d"
      "Row3a Row3b Row3c Row3d"
      "Row4a Row4b Row4c Row4d"
      "Row5a Row5b Row5c Row5d"
      "Row6a Row6b Row6c Row6d"
      "Row7a Row7b Row7c Row7d"
      "Row8a Row8b Row8c Row8d"
      "Row9a Row9b Row9c Row9d"
      "Row10a Row10b Row10c Row10d";
grid-row-gap: 1em;
margin: auto;
}

photobase div {
	font-family: var(--DejavuSans), sans-serif;
	font-size: 1em;
	color: var(--white);
	min-height: 250px;
}

photobase div:nth-child(1) {grid-area: Row1a;}
photobase div:nth-child(2) {grid-area: Row1b;}
photobase div:nth-child(3) {grid-area: Row1c;}
photobase div:nth-child(4) {grid-area: Row1d;}
photobase div:nth-child(5) {grid-area: Row2a;}
photobase div:nth-child(6) {grid-area: Row2b;}
photobase div:nth-child(7) {grid-area: Row2c;}
photobase div:nth-child(8) {grid-area: Row2d;}
photobase div:nth-child(9) {grid-area: Row3a;}
photobase div:nth-child(10) {grid-area: Row3b;}
photobase div:nth-child(11) {grid-area: Row3c;}
photobase div:nth-child(12) {grid-area: Row3d;}
photobase div:nth-child(13) {grid-area: Row4a;}
photobase div:nth-child(14) {grid-area: Row4b;}
photobase div:nth-child(15) {grid-area: Row4c;}
photobase div:nth-child(16) {grid-area: Row4d;}
photobase div:nth-child(17) {grid-area: Row5a;}
photobase div:nth-child(18) {grid-area: Row5b;}
photobase div:nth-child(19) {grid-area: Row5c;}
photobase div:nth-child(20) {grid-area: Row5d;}
photobase div:nth-child(21) {grid-area: Row6a;}
photobase div:nth-child(22) {grid-area: Row6b;}
photobase div:nth-child(23) {grid-area: Row6c;}
photobase div:nth-child(24) {grid-area: Row6d;}
photobase div:nth-child(25) {grid-area: Row7a;}
photobase div:nth-child(26) {grid-area: Row7b;}
photobase div:nth-child(27) {grid-area: Row7c;}
photobase div:nth-child(28) {grid-area: Row7d;}
photobase div:nth-child(29) {grid-area: Row8a;}
photobase div:nth-child(30) {grid-area: Row8b;}
photobase div:nth-child(31) {grid-area: Row8c;}
photobase div:nth-child(32) {grid-area: Row8d;}
photobase div:nth-child(33) {grid-area: Row9a;}
photobase div:nth-child(34) {grid-area: Row9b;}
photobase div:nth-child(35) {grid-area: Row9c;}
photobase div:nth-child(36) {grid-area: Row9d;}
photobase div:nth-child(37) {grid-area: Row10a;}
photobase div:nth-child(38) {grid-area: Row10b;}
photobase div:nth-child(39) {grid-area: Row10c;}
photobase div:nth-child(40) {grid-area: Row10d;}