Tips on adjusting CSS code to ensure that a single accordion panel is open when the page first loads

I have a code that is functioning perfectly. However, I need to make a modification so that there is a default panel open when the page loads or refreshes.

#acc-label {
  display: block;
  float: left;
  height: 330px;
  width: 50px;
  margin-bottom: 10px;
  overflow: hidden;

  -moz-box-shadow:inset 1px 0px 0px 0px #485CBD;
  -webkit-box-shadow:inset 1px 0px 0px 0px #485CBD;
  box-shadow:inset 1px 0px 0px 0px #485CBD;
  filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#320BB8', endColorstr='#320078');
  background:-webkit-gradient( linear, right top, left top, color-stop(0.05, #320BB8), color-stop(1, #320078) );
  background:-moz-linear-gradient( right center, #320BB8 5%, #320078 100% );
  background-color:#320BB8;
  border-style:solid;
  border-color:#321D85;
  color:#FFFFFF;
  font-size:15px;
  font-weight:bold;
  text-decoration:none;
  text-shadow:-1px -1px 0px #3227B0;
  text-align: center;
  font: 14px/50px Helvetica, Verdana, sans-serif; 

  -webkit-transition: width 1s ease, background 0.5s ease;
  -moz-transition: width 1s ease, background 0.5s ease;
  -o-transition: width 1s ease, background 0.5s ease;
  -ms-transition: width 1s ease, background 0.5s ease;
  transition: width 1s ease, background 0.5s ease;
}

#rad2 + label {
  -moz-box-shadow:inset 1px 0px 0px 0px #485CBD;
  -webkit-box-shadow:inset 1px 0px 0px 0px #485CBD;
  box-shadow:inset 1px 0px 0px 0px #485CBD;
  filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#320BB8', endColorstr='#320078');
  background:-webkit-gradient( linear, right top, left top, color-stop(0.05, #320BB8), color-stop(1, #320078) );
  background:-moz-linear-gradient( right center, #320BB8 5%, #320078 100% );
  background-color:#320BB8;
  border-style:solid;
  border-color:#321D85;
  color:#FFFFFF;
  font-size:15px;
  font-weight:bold;
  text-decoration:none;
  text-shadow:-1px -1px 0px #3227B0;
  -webkit-transition: width 1s ease, background 0.5s ease;
  -moz-transition: width 1s ease, background 0.5s ease;
  -o-transition: width 1s ease, background 0.5s ease;
  -ms-transition: width 1s ease, background 0.5s ease;
  transition: width 1s ease, background 0.5s ease;
}

label:hover, #rad2 + label:hover {
  filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#320078', endColorstr='#320BB8');
  background:-webkit-gradient( linear, left top, left bottom, color-stop(0.05,         #320078), color-stop(1, #320BB8) );
  background:-moz-linear-gradient( top center, #320078 5%, #320BB8 100% );
  background-color:#9B0629;
  cursor: pointer;
}

/*SLIDES*/
.accslide {
  display: block;
  height: 330px;
  width: 0px;
  padding: 10px 0;
  float: left;
  overflow: hidden;

 color: #333;
  background: #fff;
  font: 12px/1.5 Helvetica, Verdana, sans-serif;

  -webkit-transition: all 1s ease;
  -moz-transition: all 1s ease;
  -o-transition: all 1s ease;
  -ms-transition: all 1s ease;
  transition: all 1s ease;
}

.accslide p, h2, img {
  width: 420px;
  padding-left: 10px;
}

.accslide img {
  margin-top: 10px;
}

input[type="radio"]:checked ~ .accslide {
  width: 450px;
}

The current accordion works well, but I am unsure of how to set the first panel as the default one open on page load.

Thank you in advance.

htmlcssaccordion

Answer №1

When there is no clear guidance available, it may be necessary to make an educated guess on how to achieve the desired outcome. One possible approach could be:

If the element has a specific class like first

.accordian-slide:nth-child(1) /* or :first-child */ {
   display: block; /* or adjust as needed */
}
.accordian-slide {
   display: none;
}

Alternatively, if the behavior is controlled by classes like .opened and .closed

.opened { 
   display: block;
}
.closed {
   display: none;
}

If all else fails, consider checking for a configuration file that allows setting the default opened pane.

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