Improve manual duration mark

src/web/tracker/static/base.css

@@ -742,6 +742,10 @@ select {
   margin-top: 1rem;
 }
 
+.ml-1 {
+  margin-left: 0.25rem;
+}
+
 .block {
   display: block;
 }
@@ -750,14 +754,14 @@ select {
   display: flex;
 }
 
-.h-4 {
-  height: 1rem;
-}
-
 .h-5 {
   height: 1.25rem;
 }
 
+.h-4 {
+  height: 1rem;
+}
+
 .min-h-screen {
   min-height: 100vh;
 }
@@ -766,6 +770,10 @@ select {
   width: 100%;
 }
 
+.w-5 {
+  width: 1.25rem;
+}
+
 .w-7 {
   width: 1.75rem;
 }
@@ -774,10 +782,6 @@ select {
   width: 1rem;
 }
 
-.w-5 {
-  width: 1.25rem;
-}
-
 .max-w-screen-lg {
   max-width: 1024px;
 }