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CSS 전환 자동 높이가 작동하지 않음

optionbox 2020. 12. 8. 08:00
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CSS 전환 자동 높이가 작동하지 않음

이 질문에 이미 답변이 있습니다.

웹 사이트가 있는데 jquery 기반 토글 상자를 순수한 CSS 스 니펫으로 교체하기로 결정했습니다. 전환 (CSS의 마지막 줄)에 고정 높이 값을 사용하면 잘 작동하지만 auto값이 있으면 애니메이션이 누락되고 높이 변경 만 효과가 있습니다!

자동 값과 함께 사용하는 방법이 있습니까? 가변 텍스트와 스크립트를 사용하고 싶습니다.

.ac-container{
  width: 400px;
  margin: 10px auto 30px auto;
  text-align: left;
}
.ac-container label{
  font-family: 'BebasNeueRegular', 'Arial Narrow', Arial, sans-serif;
  padding: 5px 20px;
  position: relative;
  z-index: 20;
  display: block;
  height: 30px;
  cursor: pointer;
  color: #777;
  text-shadow: 1px 1px 1px rgba(255,255,255,0.8);
  line-height: 33px;
  font-size: 19px;
  background: #ffffff;
  background: -moz-linear-gradient(top, #ffffff 1%, #eaeaea 100%);
  background: -webkit-gradient(linear, left top, left bottom, color-stop(1%,#ffffff), color-stop(100%,#eaeaea));
  background: -webkit-linear-gradient(top, #ffffff 1%,#eaeaea 100%);
  background: -o-linear-gradient(top, #ffffff 1%,#eaeaea 100%);
  background: -ms-linear-gradient(top, #ffffff 1%,#eaeaea 100%);
  background: linear-gradient(top, #ffffff 1%,#eaeaea 100%);
  filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#ffffff', endColorstr='#eaeaea',GradientType=0 );
  box-shadow: 
    0px 0px 0px 1px rgba(155,155,155,0.3), 
    1px 0px 0px 0px rgba(255,255,255,0.9) inset, 
    0px 2px 2px rgba(0,0,0,0.1);
}
.ac-container label:hover{
  background: #fff;
}
.ac-container input:checked + label,
.ac-container input:checked + label:hover{
  background: #c6e1ec;
  color: #3d7489;
  text-shadow: 0px 1px 1px rgba(255,255,255, 0.6);
  box-shadow: 
    0px 0px 0px 1px rgba(155,155,155,0.3), 
    0px 2px 2px rgba(0,0,0,0.1);
}

.ac-container input{
  display: none;
}
.ac-container section{
  background: rgba(255, 255, 255, 0.5);
  margin-top: -1px;
  overflow: hidden;
  height: 0px;
  position: relative;
  z-index: 10;
  -webkit-transition: height 0.3s ease-in-out, box-shadow 0.6s linear;
  -moz-transition: height 0.3s ease-in-out, box-shadow 0.6s linear;
  -o-transition: height 0.3s ease-in-out, box-shadow 0.6s linear;
  -ms-transition: height 0.3s ease-in-out, box-shadow 0.6s linear;
  transition: height 0.3s ease-in-out, box-shadow 0.6s linear;
}
.ac-container section p{
  font-style: italic;
  color: #777;
  line-height: 23px;
  font-size: 14px;
  padding: 20px;
  text-shadow: 1px 1px 1px rgba(255,255,255,0.8);
}
.ac-container input:checked ~ section{
  -webkit-transition: height 0.5s ease-in-out, box-shadow 0.1s linear;
  -moz-transition: height 0.5s ease-in-out, box-shadow 0.1s linear;
  -o-transition: height 0.5s ease-in-out, box-shadow 0.1s linear;
  -ms-transition: height 0.5s ease-in-out, box-shadow 0.1s linear;
  transition: height 0.5s ease-in-out, box-shadow 0.1s linear;
  box-shadow: 0px 0px 0px 1px rgba(155,155,155,0.3);
}
.ac-container input:checked ~ section.ac-small{
  height: 120px; /*auto*/
}
<div class="ac-container">
  <div>

    <input id="ac-1" name="accordion-1" type="checkbox" />
    <section class="ac-small">
      <p>Some content... </p>
    </section>
    <label for="ac-1">About us</label>

  </div>	

  <div>	
    <input id="ac-2" name="accordion-2" type="checkbox" />
    <section class="ac-small">
      <p>Some content... </p>
    </section>
    <label for="ac-2">About us</label>
  </div>
</div>

CSS를 사용하려는 경우 한 가지 해결책은 max-height대신 전환 height하여 얻을 수있는 것보다 더 큰 것으로 설정하는 것입니다.

여기에 데모가 있습니다.

전환 속도를 약간 조정해야하지만 적어도 예제는 어떻게 수행 할 수 있는지에 대한 아이디어를 제공합니다. 전환에서 속성을 변경하는 것을 잊지 마십시오. 에서 transition: height 0.5s;로 transition: max-height 0.5s;.

도움이 되었기를 바랍니다! 

.ac-container{
    width: 400px;
    margin: 10px auto 30px auto;
    text-align: left;
}
.ac-container label{
    font-family: 'BebasNeueRegular', 'Arial Narrow', Arial, sans-serif;
    padding: 5px 20px;
    position: relative;
    z-index: 20;
    display: block;
    height: 30px;
    cursor: pointer;
    color: #777;
    text-shadow: 1px 1px 1px rgba(255,255,255,0.8);
    line-height: 33px;
    font-size: 19px;
    background: #ffffff;
    background: -moz-linear-gradient(top, #ffffff 1%, #eaeaea 100%);
    background: -webkit-gradient(linear, left top, left bottom, color-stop(1%,#ffffff), color-stop(100%,#eaeaea));
    background: -webkit-linear-gradient(top, #ffffff 1%,#eaeaea 100%);
    background: -o-linear-gradient(top, #ffffff 1%,#eaeaea 100%);
    background: -ms-linear-gradient(top, #ffffff 1%,#eaeaea 100%);
    background: linear-gradient(top, #ffffff 1%,#eaeaea 100%);
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#ffffff', endColorstr='#eaeaea',GradientType=0 );
    box-shadow: 
        0px 0px 0px 1px rgba(155,155,155,0.3), 
        1px 0px 0px 0px rgba(255,255,255,0.9) inset, 
        0px 2px 2px rgba(0,0,0,0.1);
}
.ac-container label:hover{
    background: #fff;
}
.ac-container input:checked + label,
.ac-container input:checked + label:hover{
    background: #c6e1ec;
    color: #3d7489;
    text-shadow: 0px 1px 1px rgba(255,255,255, 0.6);
    box-shadow: 
        0px 0px 0px 1px rgba(155,155,155,0.3), 
        0px 2px 2px rgba(0,0,0,0.1);
}

.ac-container input{
    display: none;
}
.ac-container section{
    background: rgba(255, 255, 255, 0.5);
    margin-top: -1px;
    overflow: hidden;
    max-height: 0px;
    position: relative;
    z-index: 10;
    -webkit-transition: max-height 0.3s ease-in-out, box-shadow 0.6s linear;
    -moz-transition: max-height 0.3s ease-in-out, box-shadow 0.6s linear;
    -o-transition: max-height 0.3s ease-in-out, box-shadow 0.6s linear;
    -ms-transition: max-height 0.3s ease-in-out, box-shadow 0.6s linear;
    transition: max-height 0.3s ease-in-out, box-shadow 0.6s linear;
}
.ac-container section p{
    font-style: italic;
    color: #777;
    line-height: 23px;
    font-size: 14px;
    padding: 20px;
    text-shadow: 1px 1px 1px rgba(255,255,255,0.8);
}
.ac-container input:checked ~ section{
    -webkit-transition: max-height 0.5s ease-in-out, box-shadow 0.1s linear;
    -moz-transition: max-height 0.5s ease-in-out, box-shadow 0.1s linear;
    -o-transition: max-height 0.5s ease-in-out, box-shadow 0.1s linear;
    -ms-transition: max-height 0.5s ease-in-out, box-shadow 0.1s linear;
    transition: max-height 0.5s ease-in-out, box-shadow 0.1s linear;
    box-shadow: 0px 0px 0px 1px rgba(155,155,155,0.3);
}
.ac-container input:checked ~ section.ac-small{
    max-height: 500px; /*auto*/
}
<div class="ac-container">
    <div>
        
        <input id="ac-1" name="accordion-1" type="checkbox" />
        <section class="ac-small">
            <p>Some content...Some content... Some content... Some content... Some content... Some content... Some content... Some content... Some content... Some content... Some content... Some content... Some content... Some content... Some content... Some content... Some content... Some content... Some content... Some content... Some content... Some content...  </p>
        </section>
        <label for="ac-1">About us</label>
        
    </div>    

<div>    
        <input id="ac-2" name="accordion-2" type="checkbox" />
        <section class="ac-small">
            <p>Some content... </p>
        </section>
        <label for="ac-2">About us</label>
</div>
</div>

안타깝게도 "자동"차원에서 애니메이션을 만들 수 없습니다. 이에 대한 나의 일반적인 접근 방식은 콘텐츠 높이 측정에만 사용되는 스타일이없는 DIV 인 단일 자식이있는 외부 DIV의 높이를 애니메이션하는 것입니다.

function growDiv() {
  var growDiv = document.getElementById('grow');
  if (growDiv.clientHeight) {
    growDiv.style.height = 0;
  } else {
    var wrapper = document.querySelector('.measuringWrapper');
    growDiv.style.height = wrapper.clientHeight + "px";
  }
}
#grow {
  -moz-transition: height .5s;
  -ms-transition: height .5s;
  -o-transition: height .5s;
  -webkit-transition: height .5s;
  transition: height .5s;
  height: 0;
  overflow: hidden;
  outline: 1px solid red;
}
<input type="button" onclick="growDiv()" value="grow">
<div id='grow'>
  <div class='measuringWrapper'>
    <div>
      The contents of my div.
    </div>
    <div>
      The contents of my div.
    </div>
    <div>
      The contents of my div.
    </div>
    <div>
      The contents of my div.
    </div>
    <div>
      The contents of my div.
    </div>
    <div>
      The contents of my div.
    </div>
  </div>
</div>

scaleY를 사용해야합니다.

ul {
  background-color: #eee;
  transform: scaleY(0);    
  transform-origin: top;
  transition: transform 0.3s ease-in-out;
}    
p:hover ~ ul {
  transform: scaleY(1);
}
<p>Here (scaleY(1))</p>
<ul>
  <li>Coffee</li>
  <li>Tea</li>
  <li>Milk</li>
</ul>

또는 목록 clip을 자르는 데 사용할 수 있습니다 .

ul {
  clip: rect(auto, auto, 0, auto);
  position: absolute;
  left: 0;
  margin: 0;
  padding: 0;

  color: white;

  background-color: rgba(0, 0, 0, 0.8);

  transition-delay: 0.29s;
  transition-property: clip;
  transition-duration: 0.5s;
  transition-timing-function: cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
h3:hover ~ ul,
h3:active ~ ul {
  clip: rect(auto, auto, 10rem, auto);
}
<h3>Hover here</h3>
<ul>
  <li>This</li>
  <li>list</li>
  <li>is</li>
  <li>clipped.</li>
  <li>A clip</li>
  <li>transition</li>
  <li>will</li>
  <li>show it</li>
</ul>
<p>
  Some text...
</p>

오래 전에 나는이 문제가 있었고 극복하기 위해 많은 어려움을 겪었지만 CSS 전환은 자동 값으로 작동하지 않습니다. 마지막으로 혼합 솔루션을 생각해 냈고 CSS 전환을 그대로 두되 JavaScript로 높이를 변경했습니다. 완벽하게 작동합니다.

auto isn't an appropriate type for an animatable property, see CSS Transitions: 7. Animatable properties. You need either a length (px,em,...) or percentage (13.37%).

Thus a CSS only solution isn't possible, as long as auto isn't added to the list. You'll need to use JavaScript or a specific length value.

참고URL : https://stackoverflow.com/questions/13938460/css-transition-auto-height-not-working

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