rhodecode/public/css/diff.less

div.diffblock .code-header .changeset_header > div {
    margin: 0 @padding;
}


// Line select and comment
div.diffblock.margined.comm tr {
    td {
        position: relative;
    }

    .add-comment-line {
        // Force td width for Firefox
        width: 20px;
        
        // TODO: anderson: fixing mouse-over bug. 
        // why was it vertical-align baseline in first place??
        vertical-align: top !important;
        // Force width and display for IE 9
        .add-comment-content {
            display: inline-block;
            width: 20px;

            a {
                display: none;
                position: absolute;
                top: 2px;
                left: 2px;
                color: @grey3;
            }
        }
    }

    &.line {
        &:hover, &.hover{
            .add-comment-line a{
                display: inline;
            }
        }

        &.hover, &.selected {
            &, del, ins {
                background-color: lighten(@alert3, 10%)  !important;
            }
        }

        &.commenting {
            &, del, ins {
                    background-image: none !important;
                    background-color:  lighten(@alert4, 10%) !important; 
                }
        }
    }
}

.compare-header {
    overflow-x: auto;
    overflow-y: hidden;
    clear: both;
    padding: @padding;
    background: @grey6;
    border: @border-thickness solid @border-default-color;
    .border-radius(@border-radius);

    .compare-value,
    .compare-label {
        float: left;
        display: inline-block;
        min-width: 5em;
        margin: 0;
        padding: 0.9em 0.9em 0.9em 0;
    }

    .compare-label {
        clear: both;
        font-family: @text-semibold;
    }
}