.content{width:6.1rem;margin:0 auto}.item{margin-top:.57rem;margin-bottom:1rem}.item:first-child{margin-bottom:.7rem}.header{color:#272727;font-size:.34rem;margin-bottom:.46rem}.circle{width:.58rem;height:.58rem;line-height:.58rem;border-radius:.29rem;margin-right:.27rem;background-color:#e7e7ea;display:inline-block;text-align:center}.step1,.tips{width:5.9rem;margin-left:.2rem;image-rendering:-moz-crisp-edges;image-rendering:-o-crisp-edges;image-rendering:-webkit-optimize-contrast}.red{color:#f31d1d}.tips{height:12.01rem;background:url(../image/tips.png);background-size:100%;image-rendering:crisp-edges;-ms-interpolation-mode:nearest-neighbor}.step1{height:3.61rem;background:url(../image/step1.png);background-size:100%;image-rendering:crisp-edges;-ms-interpolation-mode:nearest-neighbor}.step2,.step3{height:3.61rem;image-rendering:-moz-crisp-edges;image-rendering:-o-crisp-edges;image-rendering:-webkit-optimize-contrast;width:5.9rem;margin-left:.2rem;-ms-interpolation-mode:nearest-neighbor}.step2{background:url(../image/step2.png);background-size:100%;image-rendering:crisp-edges}.step3{background:url(../image/step3.png);background-size:100%;image-rendering:crisp-edges}.step4{width:5.9rem;height:9.51rem;margin-left:.2rem;background:url(../image/step4.png);background-size:100%;image-rendering:-moz-crisp-edges;image-rendering:-o-crisp-edges;image-rendering:-webkit-optimize-contrast;image-rendering:crisp-edges;-ms-interpolation-mode:nearest-neighbor}