[S] Style input

AquaNet/src/app.sass

@@ -87,3 +87,27 @@ button:focus, button:focus-visible
 
 .error
   color: $c-error
+
+input
+  border-radius: 8px
+  border: 1px solid transparent
+  padding: 0.6em 1.2em
+  font-size: 1em
+  font-weight: 500
+  font-family: inherit
+  background-color: #1a1a1a
+  transition: all 0.25s
+
+
+input:focus, input:focus-visible
+  border: 1px solid $c-main
+  outline: none
+
+.flex-center
+  display: flex
+  justify-content: center
+  align-items: center
+
+.clickable
+  cursor: pointer
+  user-select: none