<div class="container">
<div class="row">
<h3>Default:</h3>
<input type="checkbox" checked="checked"> One<br>
<input type="checkbox"> Two<br><br>
<input type="radio" name="defaultRadio" checked="checked"> One<br>
<input type="radio" name="defaultRadio">Two
</div>

<div class="row">
<h3>Custom Checkbox:</h3>
<label class="customContainer">One
  <input type="checkbox" checked="checked">
  <span class="checkmark"></span>
</label>
<label class="customContainer">Two
  <input type="checkbox">
  <span class="checkmark"></span>
</label>
<label class="customContainer">Three
  <input type="checkbox">
  <span class="checkmark"></span>
</label>
</div>

<div class="row">
<h3>Custom Radio Button:</h3>
<label class="customContainer">One
  <input type="radio" checked="checked" name="radio">
  <span class="radioButton"></span>
</label>
<label class="customContainer">Two
  <input type="radio" name="radio">
  <span class="radioButton"></span>
</label>
<label class="customContainer">Three
  <input type="radio" name="radio">
  <span class="radioButton"></span>
</label>
</div>
</div>
.container {
  padding:15px;
  border:5px solid #333;
  display: flex;
}

.row {
  width: 33.333%;
}

.customContainer {
    display: block;
    position: relative;
    color: #333;
    padding-left:40px;
    margin-bottom: 15px;
    cursor: pointer;
    font-size: 25px;
    user-select: none; 
}

.customContainer input {
  	position: absolute;
	  opacity: 0;
    cursor: pointer;}

.checkmark {
    position: absolute;
    top: 0;
    left: 0;
    height: 25px;
    width: 25px;
    background-color: #ffe8d6;
}

.customContainer:hover input ~ .checkmark {
    background-color: #b7b7a4;
}

.customContainer input:checked ~ .checkmark {
    background-color: #6b705c;
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
}

.customContainer input:checked ~ .checkmark:after {
    display: block;
}

.customContainer .checkmark:after {
    left: 10px;
    top: 6px;
    width: 7px;
    height: 12px;
    border: solid white;
    border-width: 0 3px 3px 0;
    transform: rotate(45deg);
}

.radioButton {
  position: absolute;
  background-color: #ffe8d6;
  top: 0;
  left: 0;
  height: 25px;
  width: 25px;
  border-radius: 50%;
}

.customContainer:hover input ~ .radioButton{
  background-color: #b7b7a4;
}

.customContainer input:checked ~ .radioButton{
  background-color: #6b705c;
}

.radioButton:after {
  content: "";
  position: absolute;
  display: none;
}

.customContainer input:checked ~ .radioButton:after {
  display: block;
}

.customContainer .radioButton:after {
  background-color: #fff;
  top: 9px;
  left: 9px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
}


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