fix lint errors

app/styles/layout/invitation.scss

@@ -52,7 +52,7 @@
             }
         }
         input:focus {
-            &+.forgot-pass {
+            +.forgot-pass {
                 @include transition(opacity .5s linear);
                 opacity: 0;
             }

app/styles/modules/auth/change-password-from-recovery.scss

@@ -8,7 +8,7 @@
         position: relative;
     }
     input:focus {
-        &+.get-token {
+        +.get-token {
             @include transition(opacity .5s linear);
             opacity: 0;
         }

app/styles/modules/auth/login-form.scss

@@ -4,7 +4,7 @@
         position: relative;
     }
     input:focus {
-        &+.forgot-pass {
+        +.forgot-pass {
             @include transition(opacity .5s linear);
             opacity: 0;
         }
@@ -24,7 +24,7 @@
     }
     .remember-me {
         vertical-align: top;
-        &+label {
+        +label {
             cursor: pointer;
         }
     }

app/styles/modules/common/lightbox.scss

@@ -233,7 +233,7 @@
     }
     .sprint-name {
         &:focus {
-            &+.last-sprint-name {
+            +.last-sprint-name {
                 @include transition (opacity .3s linear);
                 opacity: 0;
             }
@@ -245,7 +245,7 @@
         opacity: 1;
         position: absolute;
         right: 1rem;
-        top: .5rem;
+        top: .7rem;
     }
     .dates {
         margin-bottom: 1rem;