add label:after after input element - html

Question

I make custom radio checkbox this is my codes:
HTML:
.radio-custom input[type="radio"]:checked + label:after {
content: '';
position: absolute;
top: 50%;
left: 10.5px;
margin-top: -5px;
display: inline-block;
font-size: 11px;
line-height: 1;
width: 10px;
height: 10px;
background-color: #117efd;
border-radius: 50px;
}
<div class="radio-custom">
<input type="radio" name="test" id="test" value="test" />
<label>Test</label>
</div>
The problem that if I add any element after<input type="radio" name="test" id="test" value="test" /> label:after will not get what can to do to solve this problem ?

Answer 1

Change the + to a ~ and that will do the trick.
The reason yours didn't work is because you were using +, which is the adjacent selector or next-sibling selector. Changing it to the general sibling selector ~ will match the second element only if it's preceded by the first and both have the same parent.
.radio-custom input[type="radio"]:checked ~ label:after {
content: '';
position: absolute;
top: 50%;
left: 10.5px;
margin-top: -5px;
display: inline-block;
font-size: 11px;
line-height: 1;
width: 10px;
height: 10px;
background-color: #117efd;
border-radius: 50px;
}
<div class="radio-custom">
<input type="radio" name="test" id="test" value="test" />
<span></span>
<label>Test</label>
</div>

Answer 2

Follow this structure:
label {
display: inline-block;
cursor: pointer;
position: relative;
padding-left: 25px;
margin-right: 15px;
font-size: 13px;
}
input[type=radio] {
display: none;
}
label:before {
content: "";
display: inline-block;
width: 16px;
height: 16px;
margin-right: 10px;
position: absolute;
left: 0;
bottom: 1px;
background-color: #aaa;
box-shadow: inset 0px 2px 3px 0px rgba(0, 0, 0, .3), 0px 1px 0px 0px rgba(255, 255, 255, .8);
}
.radio label:before {
border-radius: 8px;
}
input[type=radio]:checked + label:before {
content: "\2022";
color: #f3f3f3;
font-size: 30px;
text-align: center;
line-height: 18px;
}
<div class="radio">
<input id="male" type="radio" name="gender" value="male">
<label for="male">Male</label>
<input id="female" type="radio" name="gender" value="female">
<label for="female">Female</label>
</div>