วิธีปิดการใช้งานปุ่มส่ง & ลิงก์เมื่อคลิกใน CSS บริสุทธิ์

.clicky:focus{
  display: none;
  pointer-events: none;
}

<a href="#down" class="clicky">test</a>
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<p id="down">target</p>

.button {
  position:relative;
  display:inline-block;
}
.button span{
  position:absolute;
  top:0;
  left:0;
  right:0;
  bottom:100%;
  z-index:-1;
  animation:overlay 1s 0s; /* Update this value to adjust the duration */
  transition:0s 2s; /* not this one! this one need to be at least equal to the above or bigger*/
}


.button *:active + span {
  animation:none;
  bottom:0;
  transition:0s 0s;
}

@keyframes overlay {
  0%,100% {
    z-index:999;
    background:rgba(255,0,0,0.2); /* To illustrate */
  }
}

<div class="button">
  <button>Click me</button>
  <span></span>
</div>

<div class="button">
  <a href="#" onclick="console.log('clicked !')">Click me</a>
  <span></span>
</div>

div {
  margin: 10px;
}

#radio0, .my-checkbox {
  position: absolute;
  height: 0;
  width: 0;
  opacity: 0;
}

#radio0 + a label {
  cursor: pointer;
}

#radio0:checked+a {
  pointer-events: none;
}

.btn-one,
.btn-two {
  padding: 0;
}

.btn-one>label,
.btn-two>label {
  padding: 1px 6px;
}

.my-checkbox:checked+.btn-one {
  display: none;
}

.btn-two {
  display: none;
}

.my-checkbox:checked+.btn-one+.btn-two {
  display: inline-block;
}

<div>
  <input id="radio0" type="radio" onclick="console.log('radio0 clicked!')">
  <a href="#">
    <label for="radio0">
        Click the link!
      </label>
  </a>
</div>

<div>
  <input type="radio" id="radio1" class="my-checkbox">
  <button type="button" class="btn-one" onclick="console.log('radio1 clicked!')">
      <label for="radio1">Click the button!</label>
    </button>
  <button type="button" class="btn-two" onclick="console.log('radio1 NOT clicked!')" disabled>
        <label for="radio1">Click the button!</label>
      </button>
</div>

<div>
  <input type="radio" id="radio2" class="my-checkbox">
  <button type="submit" class="btn-one" onclick="console.log('radio2 clicked!')">
    <label for="radio2">Submit!</label>
  </button>
  <button type="submit" class="btn-two" onclick="console.log('radio2 NOT clicked!')" disabled>
      <label for="radio2">Submit!</label>
    </button>
</div>