CSS 圆角渐变边框

 <div class="contact-box">
    <div class="contact-item">联系我们div>
div>

    .contact-item{
      width: 194px;
      height: 48px;
      border-radius: 20px 20px 20px 20px;
      background-color: #000000;
      color: #BDBDBD;
      font-weight: 500;
      font-size: 16px;
      text-align: center;
      line-height: 48px;
      cursor: pointer;
    }
    border: 1px solid;
    width: 194px;
    height: 48px;
    background: linear-gradient(90deg, rgba(202, 217, 255, 1), rgba(218, 218, 218, 1), rgba(255, 144, 71, 1));
    border-radius: 20px 20px 20px 20px;
    padding: 1px;/* 边框宽度 */

  }