edx-platform/sass/_question-view.scss

div.question-header {
  div.vote-buttons {
    display: inline-block;
    float: left;
    margin-right: flex-gutter(9);
    width: flex-grid(0.7,9);

    ul {
      li {
        background-position: center;
        background-repeat: no-repeat;
        cursor: pointer;
        font-weight: bold;
        height: 20px;
        list-style: none;
        padding: 10px;
        text-align: center;
        width: 70%;

        &.post-vote {
          @include border-radius(4px);
          background-color: lighten(#F6EFD4, 3%);
        }

        &.question-img-upvote, &.answer-img-upvote  {
          background-image: url(/static/images/askbot/vote-arrow-up.png);

          &:hover, &.on {
            background-color:#d1e3a8;
          }
        }

        &.question-img-downvote, &.answer-img-downvote  {
          background-image: url(/static/images/askbot/vote-arrow-down.png);

          &:hover, &.on {
            background-color:#eac6ad;
          }
        }
      }
    }
  }

  div.question-container {
    display: inline-block;
    float: left;
    width: flex-grid(8.3,9);

    h1 {
      margin-top: 0;
    }

    div.meta-bar {
      border-bottom: 1px solid #eee;
      display: block;
      margin: 10px 0;
      overflow: hidden;
      padding: 5px 0 10px;


      div.tag-list {
        display: inline-block;
        float:left;
        width: flex-grid(4,8);
        margin-right: flex-gutter(8);
      }

      div.question-actions {
        display: inline-block;
        float:left;
        text-align: right;
        width: flex-grid(4,8);

        a {
          color: darken(#F6EFD4, 50%);

          &.question-delete {
            color: $mit-red;
          }
        }

        span.sep {
          color: darken(#F6EFD4, 10%);
        }
      }
    }

    div.question-content {
      overflow: hidden;

      div.question-body {
        display: inline-block;
        float: left;
        margin-right: flex-gutter(8);
        width: flex-grid(6.2,8);
      }

      div.post-update-container {
        display: inline-block;
        float: left;
        width: flex-grid(1.8,8);

        div.post-update-info {
          @include box-sizing(border-box);
          @include border-radius(5px);
          background:lighten(#F6EFD4, 5%);
          padding: 10px;
          margin-bottom: 10px;

          &:last-child {
            margin-bottom: 0;
          }

          &.revision {
            text-align: center;
            background:lighten(#F6EFD4, 7%);

            a {
              color: black;
            }
          }

          a {
            color:$mit-red ;
          }

          div.change-date {
            font-size: 12px;
            margin-bottom: 10px;
          }

          div.avatar {
            display: inline-block;
            float: left;
            margin-right: 3px;

            img.gravatar {
              background: white;
              border: 1px solid darken(#F6EFD4, 10%);
              margin-right: 5px;
              padding: 3px ;
              vertical-align: bottom;
            }
          }

          div.user-meta {
            display: inline-block;
            width: 60%;

            span.user-badges {
              display: block;
            }
          }
        }
      }
    }

    div.comments-container {
      @include box-sizing(border-box);
      // background: lighten(#efefef, 3%);
      padding: 3%;
      display: inline-block;
      // margin: 15px 0 0;
      padding: 3%;
      width: 100%;

      div.comments-content {
        font-size: 13px;
        background: lighten(#efefef, 4%);

        div.block {
          border-top: 1px solid #ddd;
          padding: 15px;
          display: block;

          &:first-child {
            border-top: 0;
          }
          // &:last-child {
          //   border-bottom: 1px solid #ddd;
          // }
        }

        form.post-comments {
          padding: 15px;
        }

        div.comment {
          &:first-child {
            border-top: 0;
          }

          &:last-child {
            margin-bottom: 20px;
          }

          aside.comment-controls {
            background: none;
            border: none;
            display: inline-block;
            margin-top: -8px;
            padding:0 2% 0 0;
            text-align: center;
            width: 5%;

            div {
              background: none;
              opacity: 0.6;

              &:hover {
                opacity: 1;
              }
            }

            div.comment-votes {
                width: 16px;

              a.upvote {
                background: url(../images/askbot/comment-vote-up.png) no-repeat 2px;
                cursor: pointer;
                color: green;
                display: block;
                margin-bottom: 6px;
                margin-top: 5px;
                overflow: hidden;
                text-decoration: none;
                text-indent: -9999px; 
                width: 20px;
              }

              a.upvoted {
                @include border-radius(3px);
                background: #D1E3A8;
                color: green;
                font-weight: bold;
                margin-top: 10px;
                padding: 2px;
                text-indent: 0px;
              }
            }

            hr {
              margin: 0;
            }

            div.comment-delete {
              // display: inline;
              color: $mit-red;
              cursor: pointer;
              font-size: 15px;
            }

            div.comment-edit {
              @include transform(rotate(50deg));
              cursor: pointer;
              font-size: 16px;
              a.edit-icon {
                color: #555;
                text-decoration: none;
              }
            }
          }

          div.comment-body {
            display: inline-block;
            width: 95%;

            div.comment-meta {
              text-align: right;

              a.author {
                font-weight: bold;
              }

              a.edit {
                @extend .button;
                font-size: 12px;
                padding: 2px 10px;
              }
            }
          }
        }
      }

      #edit-comment-form {
        margin: 10px 0;
        min-height: 100px;
        width: 99%;
        resize: vertical;
      }
      .counter {
        color: #888;
        display: block;
        float: right;
        margin-top: 5px;
        text-align: right;
      }

      div.controls {
        // padding: 15px 0;
        background: lighten(#eeeeee, 4%);
        text-align: right;
        a {
          display: inline-block;
          font-size: 12px;
          margin: 10px 10px 10px 0;
        }
      }
    }
  }
}