deleting the timeline style in tracim_front

src/css/Timeline.styl

@@ -1,143 +0,0 @@
-.timeline
-  display flex
-  flex-direction column
-  margin 10px
-  border-radius 10px
-  height 100%
-  &__header
-    border-radius 10px 10px 0 0
-    padding 15px
-    text-align center
-    font-size 20px
-    color darkGrey
-    background-color grey-hover
-  &__messagelist
-    flex 1 1 0
-    margin-bottom 0
-    padding-left 0
-    border-bottom 1px solid grey
-    background-color off-white
-    overflow-Y auto
-    list-style none
-    &__item
-      padding 0 25px 20px 35px
-      &__avatar
-        position relative
-        top 43px
-        left -25px
-        width 45px
-        height 45px
-      &__createhour
-        margin-left 30px
-        opacity 0.7
-        font-size 14px
-      &__content
-        border 1px solid grey
-        border-radius 5px
-        padding 15px
-        background-color off-white
-        font-size 15px
-        z-index -1
-    &__version
-      display flex
-      justify-content space-between
-      margin-top 40px
-      padding 10px 15px
-      width 100%
-      background-color lightGrey
-      &__btn
-        padding 5px 25px
-        border-radius 5px
-        width 145px
-        color white
-        font-size 17px
-        & > i
-          margin-right 10px
-          color darkGrey
-          font-size 22px
-      &__date
-        color fontColor
-        font-size 17px
-        margin auto 0
-  &__texteditor
-    padding 2px
-    &__simpletext
-      display none
-      width 70%
-      margin-right 35px
-      &__icon
-        cursor pointer
-    &__wysiwyg
-      display block
-      & > textarea
-        width 100%
-        height 130px
-    &__submit
-      margin 10px 0
-      &__btn
-        display flex
-        cursor pointer
-        &:hover , &:focus
-          box-shadow shadow-all-btn
-        &__icon
-          margin-left 10px
-
-.sended
-  .timeline__messagelist__item__content
-    margin-right 25%
-
-.received
-  .timeline__messagelist__item
-    &__avatar
-      left 93%
-    &__createhour
-      text-align right
-      margin-right 50px
-    &__content
-      margin-left 25%
-      color white
-
-/**** MEDIA 992px & 1199px ****/
-
-@media (min-width: min-lg) and (max-width: max-lg)
-
-  .timeline__messagelist__item
-    margin-right 55px
-
-  .received
-    .timeline__messagelist__item
-      &__avatar
-        left 96%
-
-/**** MEDIA 768px & 991px ****/
-
-@media (min-width: min-md) and (max-width: max-md)
-
-  .timeline__messagelist__item
-    margin-right 55px
-
-  .received
-    .timeline__messagelist__item
-      &__avatar
-        left 96%
-
-/**** MEDIA 576px & 767px ****/
-
-@media (min-width: min-sm) and (max-width: max-sm)
-
-  .timeline__messagelist__item
-    margin-right 35px
-
-  .received
-    .timeline__messagelist__item
-      &__avatar
-        left 94%
-
-/**** MEDIA 575px ****/
-
-@media (max-width: max-xs)
-
-  .received
-    .timeline__messagelist__item
-      &__avatar
-        left 90%