Unifying style of the gallery

Fixed HTML and Sass layout
Moved upload and login pages to popups
Added deletion confirmation

gallery/user/themes/default/style.sass

@@ -0,0 +1,39 @@
+// Default theme for OnlyLegs by FluffyBean
+// Mockup link: https://www.figma.com/file/IMZT5kZr3sAngrSHSGu5di/OnlyLegs?node-id=0%3A1
+
+@import "variables"
+@import "animations"
+
+@import "ui/notification"
+@import "ui/pop-up"
+@import "ui/navigation"
+@import "ui/content"
+@import "ui/background"
+@import "ui/gallery"
+
+@import "buttons/jumpUp"
+@import "buttons/pill"
+
+// Reset
+*
+    box-sizing: border-box
+    font-family: $font
+
+html, body
+    margin: 0
+    padding: 0
+
+    min-height: 100vh
+
+    background-color: $white
+
+    scroll-behavior: smooth
+
+.wrapper
+    margin: 0
+    padding: 0
+
+    min-height: 100vh
+
+    background-color: $white
+    color: $black