.password-strength{margin-top:8px;height:5px;border-radius:3px;transition:all .3s}.password-strength.weak{background-color:#ff4d4f;width:30%}.password-strength.medium{background-color:#faad14;width:60%}.password-strength.strong{background-color:#52c41a;width:100%}.password-tips{margin-top:5px;color:#888;font-size:12px}