带边框半径的css输入角三角标签

Question

我想在input（text）元素中创建一个三角形标签，如下所示：

到目前为止我能做到的是：

我怎样才能将这个三角形“放在”输入边界下，让我们说，保持边界半径不受输入切割这个三角形的边缘？

这是我的代码：

<div class="input">
   <label>email adress</label>
   <div class="note">
      <p>*</p>
      <input type="text" placeholder="Enter your email adress">
   </div>
</div>

.input {
   display: flex;
   flex-direction: column;
   width: 100%;
}
.note > input {
   width: 515px;
   height: 48px;
   border-radius: 5px;
   border: 1px solid #7d7d7d;
   box-shadow:inset 0 0 5px 1px lightgray;
   padding-left: 20px;
   color: #acacac;
   -webkit-color: #acacac;
   -moz-color: #acacac;
   -ms-color: #acacac;
   -o-color: #acacac;
   font-size: 16px;
   background-color: rgba(211, 211, 211, 0.50);
}

.note > input:focus {
   outline: none;
   background-color: #f9f9f9;
}

.note {
   position: relative;
   display: inline-block;
}
.note:after {
   content: "";
   position: absolute;
   top: 0;
   right: 0;
   width: 0; 
   height: 0; 
   display: block;
   border-left: 35px solid transparent;
   border-bottom: 35px solid transparent;
   border-top: 35px solid #0094bb;
}

我想在没有失去形状的情况下，没有办法给这个三角形本身提供边界半径，我是对的吗？

Answer 1

我为你的P标签添加了绝对位置，并将其置于角落。 边界半径是通过向.note包装器添加边框半径并设置overflow：hidden。

来实现的

＆＃13;

＆＃13;

.note > input {
   width: 515px;
   height: 48px;
   border-radius: 5px;
   border: 1px solid #7d7d7d;
   box-shadow:inset 0 0 5px 1px lightgray;
   padding-left: 20px;
   color: #acacac;
   -webkit-color: #acacac;
   -moz-color: #acacac;
   -ms-color: #acacac;
   -o-color: #acacac;
   font-size: 16px;
   background-color: rgba(211, 211, 211, 0.50);
}

.note > input:focus {
   outline: none;
   background-color: #f9f9f9;
}

.note {
   position: relative;
   display: inline-block;
   border-radius: 5px;
   overflow:hidden;
}
.note:after {
   content: "";
   position: absolute;
   top: 0;
   right: 0;
   width: 0; 
   height: 0; 
   display: block;
   border-left: 35px solid transparent;
   border-bottom: 35px solid transparent;
   border-top: 35px solid #0094bb;
   z-index:0;
   
}
.note p{
  position: absolute;
  right: 5px;
  top: 5px;
  color:white;
  z-index:1;
  margin:0;
  padding:0;
}

label { 
  display:block;
}

＆＃13;

<div class="input">
   <label>email address</label>
   <div class="note">
      <p>*</p>
      <input type="text" placeholder="Enter your email adress">
   </div>
</div>

＆＃13;

＆＃13;

＆＃13;

Answer 2

考虑将伪元素声明为.note的嵌套元素。

这将允许您在包含元素而不是伪元素上指定所需的border-radius属性。此外，在此新的包含元素上声明了overflow: hidden规则，伪元素的右上角将是＆＃34; cut-off＆＃34;从视图中，传达的印象是这是一个嵌套在输入字段中的元素。

代码段示范：

＆＃13;

＆＃13;

.note > input {
   width: 515px;
   height: 48px;
   border-radius: 5px;
   border: 1px solid #7d7d7d;
   box-shadow:inset 0 0 5px 1px lightgray;
   padding-left: 20px;
   color: #acacac;
   -webkit-color: #acacac;
   -moz-color: #acacac;
   -ms-color: #acacac;
   -o-color: #acacac;
   font-size: 16px;
   background-color: rgba(211, 211, 211, 0.50);
}

.note > input:focus {
   outline: none;
   background-color: #f9f9f9;
}

.note {
   position: relative;
   display: inline-block;
}

/* additional */
.note .required {
    position: absolute;
    top: 0;
    right: 0;
    z-index: 1;
    color: white;
    padding: 5px;
    box-sizing: border-box;
    border-top-right-radius: 5px;
    overflow: hidden;
    width: 35px;
    height: 35px;
    text-align: right;
}

.note .required:after {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 0;
    height: 0;
    display: block;
    border-left: 35px solid transparent;
    border-bottom: 35px solid transparent;
    border-top: 35px solid #0094bb;
    z-index: -1;
}

＆＃13;

<div class="input">
   <label>email adress</label>
   <div class="note">
      <span class="required">*</span>
      <input type="text" placeholder="Enter your email adress">
   </div>
</div>

＆＃13;

＆＃13;

＆＃13;

Answer 3

我最接近您的解决方案。但我找到了其他方式，你对此感到满意......

＆＃13;

＆＃13;

.note > input {
   width: 515px;
   height: 48px;
   border-radius: 5px;
   border: 1px solid #7d7d7d;
   box-shadow:inset 0 0 5px 1px lightgray;
   padding-left: 20px;
   color: #acacac;
   -webkit-color: #acacac;
   -moz-color: #acacac;
   -ms-color: #acacac;
   -o-color: #acacac;
   font-size: 16px;
   background-color: rgba(211, 211, 211, 0.50);
}

.note > input:focus {
   outline: none;
   background-color: #f9f9f9;
}

.note {
   position: relative;
   display: inline-block;
}
.note:after {
   content: "";
   position: absolute;
   top: 0;
   right: 0;
   width: 0; 
   height: 0; 
   display: block;
   line-height: 48px;
   text-align: top;
   border-left: 35px solid transparent;
   border-bottom: 35px solid transparent;
   border-top: 35px solid #0094bb;
}
.note::before {
   content: "*";
   position: absolute;
   right: 7px;
   z-index: 1;
   top: 5px;
   color: white;
}

＆＃13;

<div class="input">
   <label>email adress</label>
   <div class="note">
      <input type="text" placeholder="Enter your email adress">
   </div>
</div>

＆＃13;

＆＃13;

＆＃13;