Clean up polluted styles and remove dead CSS code (#24497)

Follow #24393


The funny history:

* At the beginning, `.ui.message` was polluted by `text-align: center`
* Then people do `<div class="ui ... message text left">`
* But `.ui.left` is polluted by `float: left`
* Then people do `#xxx .ui.message { width: 100% !important;}`

The code just becomes more and more hacky.

After removing the pollution,  everything becomes clear and straight.


And, this PR also does:

1. Remove the `package.css`, its styles could be provided by `top
aligned`
2. Remove `#avatar-arrow`, dead code



Screenshot:


![image](https://user-images.githubusercontent.com/2114189/235862130-a9eb5d8f-7d01-457c-99f7-21d0abc3075e.png)


![image](https://user-images.githubusercontent.com/2114189/235862222-139709a7-95c2-4f89-a40f-100b2d76d9bb.png)

Co-authored-by: Giteabot <teabot@gitea.io>

templates/base/alert.tmpl

@@ -1,20 +1,20 @@
 {{if .Flash.ErrorMsg}}
-	<div class="ui negative message flash-error">
+	<div class="ui negative message flash-message flash-error">
 		<p>{{.Flash.ErrorMsg | Str2html}}</p>
 	</div>
 {{end}}
 {{if .Flash.SuccessMsg}}
-	<div class="ui positive message flash-success">
+	<div class="ui positive message flash-message flash-success">
 		<p>{{.Flash.SuccessMsg | Str2html}}</p>
 	</div>
 {{end}}
 {{if .Flash.InfoMsg}}
-	<div class="ui info message flash-info">
+	<div class="ui info message flash-message flash-info">
 		<p>{{.Flash.InfoMsg | Str2html}}</p>
 	</div>
 {{end}}
 {{if .Flash.WarningMsg}}
-	<div class="ui warning message flash-warning">
+	<div class="ui warning message flash-message flash-warning">
 		<p>{{.Flash.WarningMsg | Str2html}}</p>
 	</div>
 {{end}}

templates/package/content/container.tmpl

@@ -69,7 +69,7 @@
 	{{if .PackageDescriptor.Metadata.Labels}}
 		<h4 class="ui top attached header">{{.locale.Tr "packages.container.labels"}}</h4>
 		<div class="ui attached segment">
-			<table class="ui very basic compact table container-labels">
+			<table class="ui very basic compact table">
 				<thead>
 					<tr>
 						<th>{{.locale.Tr "packages.container.labels.key"}}</th>
@@ -79,8 +79,8 @@
 				<tbody>
 					{{range $key, $value := .PackageDescriptor.Metadata.Labels}}
 						<tr>
-							<td>{{$key}}</td>
-							<td>{{$value}}</td>
+							<td class="top aligned">{{$key}}</td>
+							<td class="gt-word-break">{{$value}}</td>
 						</tr>
 					{{end}}
 				</tbody>

templates/package/settings.tmpl

@@ -51,7 +51,7 @@
 						{{.locale.Tr "packages.settings.delete"}}
 					</div>
 					<div class="content">
-						<div class="ui warning message text left gt-word-break">
+						<div class="ui warning message gt-word-break">
 							{{.locale.Tr "packages.settings.delete.notice" .PackageDescriptor.Package.Name .PackageDescriptor.Version.Version}}
 						</div>
 						<form class="ui form" action="{{.Link}}" method="post">

templates/repo/issue/view_content/pull.tmpl

@@ -47,7 +47,7 @@
 										{{$.locale.Tr "repo.issues.dismiss_review"}}
 									</div>
 									<div class="content">
-										<div class="ui warning message text left">
+										<div class="ui warning message">
 											{{$.locale.Tr "repo.issues.dismiss_review_warning"}}
 										</div>
 										<form class="ui form dismiss-review-form" id="dismiss-review-{{.Review.ID}}" action="{{$.RepoLink}}/issues/dismiss_review" method="post">

templates/repo/issue/view_content/sidebar.tmpl

@@ -560,7 +560,7 @@
 					{{end}}
 				</div>
 				<div class="content">
-					<div class="ui warning message text left">
+					<div class="ui warning message">
 						{{if .Issue.IsLocked}}
 							{{.locale.Tr "repo.issues.unlock.notice_1"}}<br>
 							{{.locale.Tr "repo.issues.unlock.notice_2"}}<br>

templates/repo/migrate/migrating.tmpl

@@ -50,7 +50,7 @@
 		{{.locale.Tr "repo.settings.delete"}}
 	</div>
 	<div class="content">
-		<div class="ui warning message text left">
+		<div class="ui warning message">
 			{{.locale.Tr "repo.settings.delete_notices_1" | Safe}}<br>
 			{{.locale.Tr "repo.settings.delete_notices_2" .Repository.FullName | Safe}}
 			{{if .Repository.NumForks}}<br>

templates/repo/settings/options.tmpl

@@ -803,7 +803,7 @@
 				{{.locale.Tr "repo.settings.convert"}}
 			</div>
 			<div class="content">
-				<div class="ui warning message text left">
+				<div class="ui warning message">
 					{{.locale.Tr "repo.settings.convert_notices_1"}}
 				</div>
 				<form class="ui form" action="{{.Link}}" method="post">
@@ -834,7 +834,7 @@
 				{{.locale.Tr "repo.settings.convert_fork"}}
 			</div>
 			<div class="content">
-				<div class="ui warning message text left">
+				<div class="ui warning message">
 					{{.locale.Tr "repo.settings.convert_fork_notices_1"}}
 				</div>
 				<form class="ui form" action="{{.Link}}" method="post">
@@ -864,7 +864,7 @@
 			{{.locale.Tr "repo.settings.transfer"}}
 		</div>
 		<div class="content">
-			<div class="ui warning message text left">
+			<div class="ui warning message">
 				{{.locale.Tr "repo.settings.transfer_notices_1"}} <br>
 				{{.locale.Tr "repo.settings.transfer_notices_2"}} <br>
 				{{.locale.Tr "repo.settings.transfer_notices_3"}}
@@ -900,7 +900,7 @@
 			{{.locale.Tr "repo.settings.delete"}}
 		</div>
 		<div class="content">
-			<div class="ui warning message text left">
+			<div class="ui warning message">
 				{{.locale.Tr "repo.settings.delete_notices_1" | Safe}}<br>
 				{{.locale.Tr "repo.settings.delete_notices_2" .Repository.FullName | Safe}}
 				{{if .Repository.NumForks}}<br>
@@ -935,7 +935,7 @@
 			{{.locale.Tr "repo.settings.wiki_delete"}}
 		</div>
 		<div class="content">
-			<div class="ui warning message text left">
+			<div class="ui warning message">
 				{{.locale.Tr "repo.settings.delete_notices_1" | Safe}}<br>
 				{{.locale.Tr "repo.settings.wiki_delete_notices_1" .Repository.Name | Safe}}
 			</div>

web_src/css/base.css

@@ -1556,7 +1556,7 @@ img.ui.avatar,
   vertical-align: middle;
 }
 
-.ui .message {
+.ui .message.flash-message {
   text-align: center;
 }
 

web_src/css/index.css

@@ -41,6 +41,5 @@
 @import "./admin.css";
 @import "./explore.css";
 @import "./review.css";
-@import "./package.css";
 @import "./runner.css";
 @import "./helpers.css";

web_src/css/package.css

@@ -1,7 +0,0 @@
-.container-labels td:nth-child(1) {
-  vertical-align: top;
-}
-
-.container-labels td:nth-child(2) {
-  overflow-wrap: anywhere;
-}

web_src/css/repository.css

@@ -2600,39 +2600,6 @@
   height: 15px;
 }
 
-#avatar-arrow::before,
-#avatar-arrow::after {
-  right: 100%;
-  top: 20px;
-  border: solid transparent;
-  content: " ";
-  height: 0;
-  width: 0;
-  position: absolute;
-  pointer-events: none;
-}
-
-#avatar-arrow::before {
-  border-right-color: var(--color-secondary);
-  border-width: 9px;
-  margin-top: -9px;
-}
-
-#avatar-arrow::after {
-  border-right-color: var(--color-box-header);
-  border-width: 8px;
-  margin-top: -8px;
-}
-
-#transfer-repo-modal .ui.message,
-#delete-repo-modal .ui.message,
-#delete-wiki-modal .ui.message,
-#convert-fork-repo-modal .ui.message,
-#convert-mirror-repo-modal .ui.message,
-#fork-repo-modal .ui.message {
-  width: 100% !important;
-}
-
 .tab-size-1 {
   tab-size: 1 !important;
   -moz-tab-size: 1 !important;