จะเปลี่ยนรูปแบบเส้นขอบของช่องทำเครื่องหมายใน CSS ได้อย่างไร

label,
input[type="radio"] + span,
input[type="radio"] + span::before,
label,
input[type="checkbox"] + span,
input[type="checkbox"] + span::before
{
    display: inline-block;
    vertical-align: middle;
}
 
label *,
label *
{
    cursor: pointer;
}
 
input[type="radio"],
input[type="checkbox"]
{
    opacity: 0;
    position: absolute;
}
 
input[type="radio"] + span,
input[type="checkbox"] + span
{
    font: normal 11px/14px Arial, Sans-serif;
    color: #333;
}
 
label:hover span::before,
label:hover span::before
{
    -moz-box-shadow: 0 0 2px #ccc;
    -webkit-box-shadow: 0 0 2px #ccc;
    box-shadow: 0 0 2px #ccc;
}
 
label:hover span,
label:hover span
{
    color: #000;
}
 
input[type="radio"] + span::before,
input[type="checkbox"] + span::before
{
    content: "";
    width: 12px;
    height: 12px;
    margin: 0 4px 0 0;
    border: solid 1px #a8a8a8;
    line-height: 14px;
    text-align: center;
     
    -moz-border-radius: 100%;
    -webkit-border-radius: 100%;
    border-radius: 100%;
     
    background: #f6f6f6;
    background: -moz-radial-gradient(#f6f6f6, #dfdfdf);
    background: -webkit-radial-gradient(#f6f6f6, #dfdfdf);
    background: -ms-radial-gradient(#f6f6f6, #dfdfdf);
    background: -o-radial-gradient(#f6f6f6, #dfdfdf);
    background: radial-gradient(#f6f6f6, #dfdfdf);
}
 
input[type="radio"]:checked + span::before,
input[type="checkbox"]:checked + span::before
{
    color: #666;
}
 
input[type="radio"]:disabled + span,
input[type="checkbox"]:disabled + span
{
    cursor: default;
     
    -moz-opacity: .4;
    -webkit-opacity: .4;
    opacity: .4;
}
 
input[type="checkbox"] + span::before
{
    -moz-border-radius: 2px;
    -webkit-border-radius: 2px;
    border-radius: 2px;
}
 
input[type="radio"]:checked + span::before
{
    content: "\2022";
    font-size: 30px;
    margin-top: -1px;
}
 
input[type="checkbox"]:checked + span::before
{
    content: "\2714";
    font-size: 12px;
}



input[class="blue"] + span::before
{
    border: solid 1px blue;
    background: #B2DBFF;
    background: -moz-radial-gradient(#B2DBFF, #dfdfdf);
    background: -webkit-radial-gradient(#B2DBFF, #dfdfdf);
    background: -ms-radial-gradient(#B2DBFF, #dfdfdf);
    background: -o-radial-gradient(#B2DBFF, #dfdfdf);
    background: radial-gradient(#B2DBFF, #dfdfdf);
}
input[class="blue"]:checked + span::before
{
    color: darkblue;
}



input[class="red"] + span::before
{
    border: solid 1px red;
    background: #FF9593;
    background: -moz-radial-gradient(#FF9593, #dfdfdf);
    background: -webkit-radial-gradient(#FF9593, #dfdfdf);
    background: -ms-radial-gradient(#FF9593, #dfdfdf);
    background: -o-radial-gradient(#FF9593, #dfdfdf);
    background: radial-gradient(#FF9593, #dfdfdf);
}
input[class="red"]:checked + span::before
{
    color: darkred;
}

 <label><input type="radio" checked="checked" name="radios-01" /><span>checked radio button</span></label>
 <label><input type="radio" name="radios-01" /><span>unchecked radio button</span></label>
 <label><input type="radio" name="radios-01" disabled="disabled" /><span>disabled radio button</span></label>

<br/>

 <label><input type="radio" checked="checked" name="radios-02"  class="blue" /><span>checked radio button</span></label>
 <label><input type="radio" name="radios-02" class="blue" /><span>unchecked radio button</span></label>
 <label><input type="radio" name="radios-02" disabled="disabled" class="blue" /><span>disabled radio button</span></label>

<br/>

 <label><input type="radio" checked="checked" name="radios-03"  class="red" /><span>checked radio button</span></label>
 <label><input type="radio" name="radios-03" class="red" /><span>unchecked radio button</span></label>
 <label><input type="radio" name="radios-03" disabled="disabled" class="red" /><span>disabled radio button</span></label>

<br/>
 
<label><input type="checkbox" checked="checked" name="checkbox-01" /><span>selected checkbox</span></label>
<label><input type="checkbox" name="checkbox-02" /><span>unselected checkbox</span></label>
<label><input type="checkbox" name="checkbox-03" disabled="disabled" /><span>disabled checkbox</span></label>

<br/>
 
<label><input type="checkbox" checked="checked" name="checkbox-01" class="blue" /><span>selected checkbox</span></label>
<label><input type="checkbox" name="checkbox-02" class="blue" /><span>unselected checkbox</span></label>
<label><input type="checkbox" name="checkbox-03" disabled="disabled" class="blue" /><span>disabled checkbox</span></label>

<br/>
 
<label><input type="checkbox" checked="checked" name="checkbox-01" class="red" /><span>selected checkbox</span></label>
<label><input type="checkbox" name="checkbox-02" class="red" /><span>unselected checkbox</span></label>
<label><input type="checkbox" name="checkbox-03" disabled="disabled" class="red" /><span>disabled checkbox</span></label>

input[type=checkbox] {
	-moz-appearance:none;
	-webkit-appearance:none;
	-o-appearance:none;
	outline: none;
	content: none;	
}

input[type=checkbox]:before {
	font-family: "FontAwesome";
    content: "\f00c";
    font-size: 15px;
    color: transparent !important;
    background: #fef2e0;
    display: block;
    width: 15px;
    height: 15px;
    border: 1px solid black;
    margin-right: 7px;
}

input[type=checkbox]:checked:before {

	color: black !important;
}

<link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.css" rel="stylesheet"/>

<input type="checkbox">

<!DOCTYPE html>
<html>
<head>
<style> 

.abc123
{
	-webkit-appearance:none;
    width: 14px;
    height: 14px;
    display: inline-block;
    background: #FFFFFF;
	border: 1px solid rgba(220,220,225,1);
}
.abc123:after {
  content: "";
  display: inline-block;
  position: relative;
  top: -3px;
  left: 4px;
  width: 3px;
  height: 5px;
  border-bottom: 1px solid #fff;
  border-right: 1px solid #fff;
  -webkit-transform: rotate(45deg);
}

input[type=checkbox]:checked   {
    background: #327DFF;
    outline: none;
    border: 1px solid rgba(50,125,255,1);
}
input:focus,input:active {
	outline: none;
}

input:hover {
   border: 1px solid rgba(50,125,255,1);
}

</style>
</head>
<body>

<input class="abc123" type="checkbox"></input>


</body>
</html>