CSS渐变边框未正确显示

Question

我想为border-color 的text 输入设置一半的蓝色和橙色。

我尝试使用渐变，但它不起作用。

我的代码有什么问题？

.search {
  width: 550px;
  height: 50px;
  margin-left: 350px;
  border-radius: 20px;
  outline: none;
  margin-top: 70px;
  border: solid;
  border-image: linear-gradient(to right, rgb(254, 113, 53) 50%, rgb(55, 154, 214) 50%);
  font-size: 20px;
  text-align: center;
  transition: all 0.2s linear;
}

.search:hover,
.search:focus {
  border: #4cbea5 solid;
}

<div>
  <form method="post">
    <input type="Search" class="search" placeholder="Search">
  </form>
</div>

Answer 1

您需要像这样在border-image 中指定切片值：

.search {
  width: 550px;
  height: 50px;
  border-radius: 20px;
  outline: none;
  margin-top: 70px;
  border: solid;
  border-image: linear-gradient(to right, rgb(254, 113, 53) 50%, rgb(55, 154, 214) 50%) 2;
  font-size: 20px;
  text-align: center;
 }

<form method="post">
    <input type="Search" class="search" placeholder="Search">
  </form>

你可以阅读更多关于border-image

顺便说一句，您不能将border-radius 与border-image 一起使用，但您可以使用多个背景并通过调整background-clip 来实现相同的效果。这也将允许您具有悬停行为：

.search {
  width: 550px;
  height: 50px;
  border-radius: 20px;
  outline: none;
  margin-top: 70px;
  border: 2px solid transparent;
  background: 
    linear-gradient(#fff,#fff) content-box,
    linear-gradient(to right, rgb(254, 113, 53) 50%, rgb(55, 154, 214) 50%) border-box;
  font-size: 20px;
  text-align: center;
  transition: all 0.2s linear;
}

.search:hover,
.search:focus {
  border-color:#4cbea5;
}

<form method="post">
    <input type="Search" class="search" placeholder="Search">
  </form>

相关：Border Gradient with Border Radius

Answer 2

要在您正在寻找的边框上获得半橙色、半蓝色渐变，请使用border-image-slice 属性并将蓝色和橙色边框图像应用于搜索类。您可以查看干净的边框渐变和悬停时的平滑过渡。 希望，它会有所帮助。

.search{
  width: 550px;
  height: 50px;
  margin-left: 350px;
  border-radius: 20px;
  outline: none;
  margin-top: 70px;
  border: solid;
  border-image: linear-gradient(to right, #4cbea5 0%, orange 100%);
  border-image-slice: 1;
  font-size: 20px; 
  text-align: center;
   transition: all 0.2s linear;
}
.search:hover , .search:focus{
border: #4cbea5 solid;
}

<div>
    <form method="post">
    <input type="Search" class="search" placeholder="Search">
    </form>
    </div>

Answer 3

你在这个渐变线上打错了，应该是这样的：

  border-image: linear-gradient(to right, rgb(254, 113, 53), rgb(55, 154, 214)) 1 20%;

查看运行演示：

.search {
  width: 550px;
  height: 50px;
  margin-left: 50px;  /* adjust as needed */
  border-radius: 20px;
  outline: none;
  margin-top: 70px;
  border: solid 5px;  /* made thicker for illustration purposes only */
  border-image: linear-gradient(to right, rgb(254, 113, 53), rgb(55, 154, 214)) 1 20%;
  font-size: 20px;
  text-align: center;
}

.search:hover,
.search:focus {
  border: #4cbea5 solid;
}

<div>
  <form method="post">
    <input type="Search" class="search" placeholder="Search">
  </form>
</div>