server/apps/files/css/upload.scss

#upload {
	box-sizing: border-box;
	height: 36px;
	width: 39px;
	padding: 0 !important; /* override default control bar button padding */
	margin-left: 3px;
	overflow: hidden;
	vertical-align: top;
	position: relative;
	z-index: -20;
}
#upload .icon-upload {
	position: relative;
	display: block;
	width: 100%;
	height: 44px;
	width: 44px;
	margin: -5px -3px;
	cursor: pointer;
	z-index: 10;
	opacity: .65;
}
.file_upload_target { display:none; }
.file_upload_form { display:inline; float:left; margin:0; padding:0; cursor:pointer; overflow:visible; }

#uploadprogresswrapper, #uploadprogresswrapper * {
	box-sizing: border-box;
}

#uploadprogresswrapper {
	display: inline-block;
	vertical-align: top;
	height: 36px;
	margin-left: 3px;
}
#uploadprogresswrapper > input[type='button'] {
	height: 36px;
	margin-left: 3px;
}
#uploadprogressbar {
	border-color: var(--color-border-dark);
	border-radius: 18px 0 0 18px;
	border-right: 0;
	position:relative;
	float: left;
	width: 200px;
	height: 36px;
	display:inline-block;
	text-align: center;

	.ui-progressbar-value {
		margin: 0;
	}
}
#uploadprogressbar .ui-progressbar-value.ui-widget-header.ui-corner-left {
	height: calc(100% + 2px);
	top: -1px;
	left: -1px;
	position: absolute;
	overflow: hidden;
	background-color: var(--color-primary);
}
#uploadprogressbar .label {
	top: 8px;
	opacity: 1;
	overflow: hidden;
	white-space: nowrap;
	font-weight: normal;
}
#uploadprogressbar .label.inner {
	color: var(--color-primary-text);
	position: absolute;
	display: block;
	width: 200px;
}
#uploadprogressbar .label.outer {
	position: relative;
	color: var(--color-main-text);
}
#uploadprogressbar .desktop {
	display: block;
}
#uploadprogressbar .mobile {
	display: none;
}

#uploadprogressbar + .stop {
	border-top-left-radius: 0;
	border-bottom-left-radius: 0;
}

.oc-dialog .fileexists {
	-webkit-touch-callout: none;
	-webkit-user-select: none;
	-khtml-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
	user-select: none;
	margin-bottom: 30px;
}

.oc-dialog .fileexists .conflict .filename,
.oc-dialog .fileexists .conflict .mtime,
.oc-dialog .fileexists .conflict .size {
	-webkit-touch-callout: initial;
	-webkit-user-select: initial;
	-khtml-user-select: initial;
	-moz-user-select: initial;
	-ms-user-select: initial;
	user-select: initial;
}
.oc-dialog .fileexists .conflict .message {
	color: #e9322d;
}
.oc-dialog .fileexists table {
	width: 100%;
}
.oc-dialog .fileexists th {
	padding-left: 0;
	padding-right: 0;
}
.oc-dialog .fileexists th input[type='checkbox'] {
	margin-right: 3px;
}
.oc-dialog .fileexists th:first-child {
	width: 225px;
}
.oc-dialog .fileexists th label {
	font-weight: normal;
	color:black;
}
.oc-dialog .fileexists th .count {
	margin-left: 3px;
}
.oc-dialog .fileexists .conflicts .template {
	display: none;
}
.oc-dialog .fileexists .conflict {
	width: 100%;
	height: 85px;
}
.oc-dialog .fileexists .conflict .filename {
	color:#777;
	word-break: break-all;
	clear: left;
}
.oc-dialog .fileexists .icon {
	width: 64px;
	height: 64px;
	margin: 0px 5px 5px 5px;
	background-repeat: no-repeat;
	background-size: 64px 64px;
	float: left;
}

.oc-dialog .fileexists .original,
.oc-dialog .fileexists .replacement {
	float: left;
	width: 225px;
}
.oc-dialog .fileexists .conflicts {
	overflow-y: auto;
	max-height: 225px;
}
.oc-dialog .fileexists .conflict input[type='checkbox'] {
	float: left;
}
.oc-dialog .fileexists #allfileslabel {
	float:right;
}
.oc-dialog .fileexists #allfiles {
	vertical-align: bottom;
	position: relative;
	top: -3px;
}
.oc-dialog .fileexists #allfiles + span{
	vertical-align: bottom;
}

.oc-dialog .oc-dialog-buttonrow {
	width:100%;
	text-align:right;

	.cancel {
		float:left;
	}
}

.highlightUploaded {
	-webkit-animation: highlightAnimation 2s 1;
	-moz-animation: highlightAnimation 2s 1;
	-o-animation: highlightAnimation 2s 1;
	animation: highlightAnimation 2s 1;
}

@-webkit-keyframes highlightAnimation {
  0% { background-color: rgba(255, 255, 140, 1); }
  100% { background-color: rgba(0, 0, 0, 0); }
}
@-moz-keyframes highlightAnimation {
  0% { background-color: rgba(255, 255, 140, 1); }
  100% { background-color: rgba(0, 0, 0, 0); }
}
@-o-keyframes highlightAnimation {
  0% { background-color: rgba(255, 255, 140, 1); }
  100% { background-color: rgba(0, 0, 0, 0); }
}
@keyframes highlightAnimation {
  0% { background-color: rgba(255, 255, 140, 1); }
  100% { background-color: rgba(0, 0, 0, 0); }
}