:target 타겟을 이용하여 수평 아코디언 작업중인데요 오로지 css 로만요 

그런데 문제는 첫번째 타겟이 처음부터 열렸으면 좋겠는데 닫혀 있어서요 active 도 써보고 하였는데 안되어서요 방법 혹시아실까요 

<article class="accordion">
    <section id="acc1">
        <h2><a href="#acc1">Title One</a></h2>
        <p>This content appears on page 1.</p>
    </section>
    <section id="acc2">
        <h2><a href="#acc2">Title Two</a></h2>
        <p>This content appears on page 2.</p>
    </section>
    <section id="acc3">
        <h2><a href="#acc3">Title Three</a></h2>
        <p>This content appears on page 3.</p>
    </section>
    <section id="acc4">
        <h2><a href="#acc4">Title Four</a></h2>
        <p>This content appears on page 4.</p>
    </section>
    <section id="acc5">
        <h2><a href="#acc5">Title Five</a></h2>
        <p>This content appears on page 5.</p>
    </section>
    <section id="acc6">
        <h2><a href="#acc6">Title six</a></h2>
        <p>This content appears on page 6.</p>
    </section>
    <section id="acc7">
        <h2><a href="#acc7">Title seven</a></h2>
        <p>This content appears on page 7.</p>
    </section>
</article>


<style>
.accordion #acc1{background:#ededed; }
.accordion #acc1:target{background:url('https://needsmine0102.cafe24.com/acodian01.jpg')no-repeat;}
.accordion #acc2{background:#ffffff; }
.accordion #acc2:target{background:url('https://needsmine0102.cafe24.com/acodian01.jpg')no-repeat;}
.accordion #acc3{background: #ededed; }
.accordion #acc3:target{background:url('https://needsmine0102.cafe24.com/acodian01.jpg')no-repeat;}
.accordion #acc4{background: #ffffff; }
.accordion #acc4:target{background:url('https://needsmine0102.cafe24.com/acodian01.jpg')no-repeat;}
.accordion #acc5{background: #ededed; }
.accordion #acc5:target{background:url('https://needsmine0102.cafe24.com/acodian01.jpg')no-repeat;}
.accordion #acc6{background: #ffffff; }
.accordion #acc6:target{background:url('https://needsmine0102.cafe24.com/acodian01.jpg')no-repeat;}
.accordion #acc7{background: #ededed; }
.accordion #acc7:target{background:url('https://needsmine0102.cafe24.com/acodian01.jpg')no-repeat;}
body{padding:0;margin: 0;}
article.accordion
{
    display: block;
    width: 100%;
    margin: 0 auto;
    overflow: auto;
}
article.accordion section
{
    position: relative;
    display: block;
    float: left;
    width: 8.33%;
    height: 100%;
    color: #333;
    background-color: #333;
    overflow: hidden;
}
article.accordion section h2
{
    position: absolute;
    font-size: 1em;
    font-weight: bold;
    width: 12em;
    height: 2em;
    top: 12em;
    left: 0;
    text-indent: 1em;
    padding: 0;
    margin: 0;
    color: #ddd;
    -webkit-transform-origin: 0 0;
    -moz-transform-origin: 0 0;
    -ms-transform-origin: 0 0;
    -o-transform-origin: 0 0;
    transform-origin: 0 0;
    -webkit-transform: rotate(-90deg);
    -moz-transform: rotate(-90deg);
    -ms-transform: rotate(-90deg);
    -o-transform: rotate(-90deg);
    transform: rotate(-90deg);
}
article.accordion section h2 a
{
    display: block;
    width: 100%;
    line-height: 2em;
    text-decoration: none;
    color: inherit;
    outline: 0 none;
}
article.accordion section:target
{
    width: 50%;
    padding: 0;
    color: #333;
    background-color: #fff;
}


article.accordion section:target h2
{
    position: static;
    font-size: 1.3em;
    text-indent: 0;
    color: #333;
    -webkit-transform: rotate(0deg);
    -moz-transform: rotate(0deg);
    -ms-transform: rotate(0deg);
    -o-transform: rotate(0deg);
    transform: rotate(0deg);
}
article.accordion section,
article.accordion section h2
{
    -webkit-transition: all 1s ease;
    -moz-transition: all 1s ease;
    -ms-transition: all 1s ease;
    -o-transition: all 1s ease;
    transition: all 1s ease;
}


    </style>