另一个div内的div的边框半径重叠

我正在使用 React、HTML 和 CSS 制作这张卡片

这是我的代码：

<div className="plan">
  <div className="plan-name">
    <h5>BASIC</h5>
  </div>
  <div className="plan-price">
    <h2>$ 6.99</h2>
    <span>Screen Availabilty Simultaneously</span>
  </div>
  <div className="plan-details">
    <ul>
      <li>
        <span>
          <CheckIcon />
        </span>
        Access to All Library in Unlimited
      </li>
      <li>New Content Monthly</li>
      <li>Available on PC, Smartphones and tablet</li>
      <li>Drawing in Color</li>
      <li>Color in Very High Quality</li>
      <li>Canceable at Any Time</li>
    </ul>
  </div>
</div>

CSS：

.plan {
    border-radius: 25px;
    overflow: hidden;
    background-color: #fff;
}

.plan-name {
    background-color: #3e104f;
    padding: 25px 0;
    border-style: solid;
    border-width: 0;
    border-bottom-left-radius: 20px;
    border-bottom-right-radius: 20px;
}

.plan-price {
    color: #3e104f;
    background-color: #fff;
    padding: 35px 0;
}

.plan-details {
    background-color: #3e104f;
    height: 100%;
    border-radius: 20px;
}

输出：

但是我在所有角落都得到了上面突出显示的白色边框。谁能告诉我我哪里做错了？或者它来自哪里？我如何隐藏它？

回答

.plan {margin-top: 25px; overflow: visible;} /* here just remove overflow: hidden to show .plan-name outside of .plan */
.plan-name {margin-top: -25px; border-top-right-radius: 25px; border-top-left-radius: 25px;}