Resizing of button in html/css

I have the following code:

/* toggle button*/
*, *:after, *:before {
  box-sizing: border-box;
}

/*=====================*/
.checkbox {
  position: relative;
  display: inline-block;
}
.checkbox:after, .checkbox:before {
  font-family: FontAwesome;
  font-feature-settings: normal;
  -webkit-font-kerning: auto;
          font-kerning: auto;
  font-language-override: normal;
  font-stretch: normal;
  font-style: normal;
  font-synthesis: weight style;
  font-variant: normal;
  font-weight: normal;
  text-rendering: auto;
}
.checkbox label {
  width: 90px;
  position: relative;
  display: inline-block;
  border-radius: 46px;
  transition: 0.4s;
}
.checkbox label:after {
  content: '';
  position: absolute;
  width: 50px;
  border-radius: 100%;
  left: 0;
  z-index: 2;
  background: #fff;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.2);
  transition: 0.4s;
}
.checkbox input {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  z-index: 5;
  opacity: 0;
  cursor: pointer;
}
.checkbox input:hover + label:after {
  box-shadow: 0 2px 15px 0 rgba(0, 0, 0, 0.2), 0 3px 8px 0 rgba(0, 0, 0, 0.15);
}
.checkbox input:checked + label:after {
  left: 40px;
}

.model-7 .checkbox label {
  background: none;
  border: 5px solid #555;
  height: 42px;
  margin-left: 15px;
}
.model-7 .checkbox label:after {
  background: #555;
  box-shadow: none;
  top: 2px;
  left: 2px;
  width: 28px;
  height: 28px;
}
.model-7 .checkbox input:checked + label {
  border-color: #04c6db;
}
.model-7 .checkbox input:checked + label:after {
  background: #04c6db;
  left: 50px;
}

<div class="model-7">
  <div class="checkbox">
    <input type="checkbox">
    <label></label>
  </div>
</div>

I want to resize the toggle button, but the problem is there is no element in the toggle button’s css that controls the height. I am able to control the width of the button, but there is no such element that controls the height of the button. Initially, in the .checkbox label there was height: 42px; but I removed it because it did not do anything. Whenever I would change the height from 42px to 30px, it would not work and so I just removed that. Any suggestions on how I can control the height of the button?

Answer

Modifying the label and its ::after pseudo-element height resizes the toggle button

/* toggle button*/
*, *:after, *:before {
  box-sizing: border-box;
}

/*=====================*/
.checkbox {
  position: relative;
  display: inline-block;
}
.checkbox:after, .checkbox:before {
  font-family: FontAwesome;
  font-feature-settings: normal;
  -webkit-font-kerning: auto;
          font-kerning: auto;
  font-language-override: normal;
  font-stretch: normal;
  font-style: normal;
  font-synthesis: weight style;
  font-variant: normal;
  font-weight: normal;
  text-rendering: auto;
}
.checkbox label {
  width: 90px;
  position: relative;
  display: inline-block;
  border-radius: 46px;
  transition: 0.4s;
}
.checkbox label:after {
  content: '';
  position: absolute;
  width: 50px;
  border-radius: 100%;
  left: 0;
  z-index: 2;
  background: #fff;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.2);
  transition: 0.4s;
}
.checkbox input {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  z-index: 5;
  opacity: 0;
  cursor: pointer;
}
.checkbox input:hover + label:after {
  box-shadow: 0 2px 15px 0 rgba(0, 0, 0, 0.2), 0 3px 8px 0 rgba(0, 0, 0, 0.15);
}
.checkbox input:checked + label:after {
  left: 40px;
}

.model-7 .checkbox label {
  background: none;
  border: 5px solid #555;
  height: 30px;
  margin-left: 15px;
}
.model-7 .checkbox label:after {
  background: #555;
  box-shadow: none;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
}
.model-7 .checkbox input:checked + label {
  border-color: #04c6db;
}
.model-7 .checkbox input:checked + label:after {
  background: #04c6db;
  left: 50px;
}

<div class="model-7">
  <div class="checkbox">
    <input type="checkbox" >
    <label></label>
  </div>
</div>