oliverdavies.uk/styles/components/_testimonials.scss

.testimonial {
    @include clearfix;
    margin-bottom: 10px;

    .testimonial__image {
        @extend .img-circle;
        @extend .pull-right;
        height: 75px;
        margin: 0 0 10px 10px;
        width: 75px;

        @include breakpoint($screen-sm) {
            height: 90px;
            width: 90px;
        }
    }
}