話不多說(shuō)直接上代碼

                margin-left .2rem
                font-size .28rem
                background-image: 
                -webkit-gradient( linear, left top, right top, color-stop(0, #f22), 
                color-stop(0.15, #f2f), 
                color-stop(0.3, #22f), 
                color-stop(0.45, #2ff), 
                color-stop(0.6, #2f2),
                color-stop(0.75, #2f2), 
                color-stop(0.9, #ff2), 
                color-stop(1, #f22) );
                color transparent
                -webkit-background-clip text

效果圖