Change border-color of radio button when selected

问题

I want to have a green radio button surrounded with a green border when I select it.
This is what I have:

input[type='radio'] {
        -webkit-appearance: none;
        width: 10px;
        height: 10px;
        border-radius: 50%;
        outline: none;
        box-shadow: 0 0 0 2px gray;
    }

    input[type='radio']:before {
        content: '';
        display: block;
        width: 60%;
        height: 60%;
        margin: 20% auto;
        border-radius: 50%;
    }

    input[type='radio']:checked:before {
        background: green;
    }

    .role {
        margin-right: 80px;
        margin-left: 20px;
        font-weight: normal;
    }

    .checkbox label {
        margin-bottom: 20px !important;
    }

    .roles {
        margin-bottom: 40px;
    }

And the template:

<div class="roles">
    <input type="radio" name="role" value="ONE" id="one">
    <label class="role" for="one">ONE</label>
    <input type="radio" name="role" value="TWO" id="two">
    <label class="role" for="two">TWO</label>
</div>

Here is a Jsfiddle: Demo

Like you can see the border-color never changes to green... I tried to add border-color property to no avail... How can I do it?

Thanks!

回答1:

Hey mate you need to check your css. The border you got is created by box-shadow and not by a border:

here is a fiddle that is working. Have Fun

input[type='radio'] {
        -webkit-appearance: none;
        width: 20px;
        height: 20px;
        border-radius: 50%;
        outline: none;
        border: 3px solid gray;
    }

    input[type='radio']:before {
        content: '';
        display: block;
        width: 60%;
        height: 60%;
        margin: 20% auto;
        border-radius: 50%;
    }

 input[type="radio"]:checked:before {
        background: green;
        
    }
    
    input[type="radio"]:checked {
      border-color:green;
    }

    .role {
        margin-right: 80px;
        margin-left: 20px;
        font-weight: normal;
    }

    .checkbox label {
        margin-bottom: 20px !important;
    }

    .roles {
        margin-bottom: 40px;
    }

<div class="roles">
    <input type="radio" name="role" value="ONE" id="one">
    <label class="role" for="one">ONE</label>
    <input type="radio" name="role" value="TWO" id="two">
    <label class="role" for="two">TWO</label>
</div>

回答2:

You could just update the box-shadow color:

input[type='radio'] {
  -webkit-appearance: none;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  outline: none;
  box-shadow: 0 0 0 2px gray;
}

input[type='radio']:checked {
  box-shadow: 0 0 0 2px green;
}

input[type='radio']:before {
  content: '';
  display: block;
  width: 60%;
  height: 60%;
  margin: 20% auto;
  border-radius: 50%;
}

input[type='radio']:checked:before {
  background: green;
}

.role {
  margin-right: 80px;
  margin-left: 20px;
  font-weight: normal;
}

.checkbox label {
  margin-bottom: 20px !important;
}

.roles {
  margin-bottom: 40px;
}

<div class="roles">
  <input type="radio" name="role" value="ONE" id="one">
  <label class="role" for="one">ONE</label>
  <input type="radio" name="role" value="TWO" id="two">
  <label class="role" for="two">TWO</label>
</div>

来源：https://stackoverflow.com/questions/43589287/change-border-color-of-radio-button-when-selected