[html] How to change checkbox's border style in CSS?

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<!DOCTYPE html>_x000D_
<html>_x000D_
<head>_x000D_
<style> _x000D_
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.abc123_x000D_
{_x000D_
 -webkit-appearance:none;_x000D_
    width: 14px;_x000D_
    height: 14px;_x000D_
    display: inline-block;_x000D_
    background: #FFFFFF;_x000D_
 border: 1px solid rgba(220,220,225,1);_x000D_
}_x000D_
.abc123:after {_x000D_
  content: "";_x000D_
  display: inline-block;_x000D_
  position: relative;_x000D_
  top: -3px;_x000D_
  left: 4px;_x000D_
  width: 3px;_x000D_
  height: 5px;_x000D_
  border-bottom: 1px solid #fff;_x000D_
  border-right: 1px solid #fff;_x000D_
  -webkit-transform: rotate(45deg);_x000D_
}_x000D_
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input[type=checkbox]:checked   {_x000D_
    background: #327DFF;_x000D_
    outline: none;_x000D_
    border: 1px solid rgba(50,125,255,1);_x000D_
}_x000D_
input:focus,input:active {_x000D_
 outline: none;_x000D_
}_x000D_
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input:hover {_x000D_
   border: 1px solid rgba(50,125,255,1);_x000D_
}_x000D_
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</style>_x000D_
</head>_x000D_
<body>_x000D_
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<input class="abc123" type="checkbox"></input>_x000D_
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</body>_x000D_
</html>
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