javascripthtmlcssflexbox

Javascript collapsible affecting Flex display


No matter how I tried to modify my CSS I am not able to a row displaying 5 categories in .content despite having the display: flex property.

Why can't I display my .content-2 in the middle? Just like the flex property is ordering it? I am able to get something decent especially in .hori-box-skill when I remove the my javascript remove the collapsible effect.

document.addEventListener("DOMContentLoaded", function() {
  var coll = document.getElementsByClassName("collapse");

  for (var i = 0; i < coll.length; i++) {
    var content = coll[i].nextElementSibling;
    content.style.display = "none"; // Ensures it's hidden on load

    coll[i].addEventListener("click", function() {
      this.classList.toggle("active");
      var content = this.nextElementSibling;
      if (content.style.display === "block") {
        content.style.display = "none";
      } else {
        content.style.display = "block";
      }
    });
  }
});
* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;

}

html {
  scroll-behavior: smooth;
}


body {
  overflow-x: hidden;
}


/* Top section here */

.top-section {
  color: white;
}

.header {
  background-image: url("../images/my_pc1.jpg");
  background-size: cover;
  background-position: center;
  height: 100vh;
  position: relative;


}

.header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  background-color: rgba(0, 0, 0, 0.2);
  /* adjust opacity here */
  z-index: 1;
}

.header * {
  position: relative;
  z-index: 2;
  /* Ensures content appears above the overlay */
}


.bottom-section {
  background-color: black;
  color: white;
  padding: 50px;

}

.right-navbar ul {
  display: flex;
  justify-content: center;
  text-align: center;
  gap: 20px;
  font-size: 20px;
  padding: 0;
  margin: 0;
}

.navbar {
  background-color: rgba(19, 22, 26, 0.5);
  /* padding: 10px; */
  position: relative;
  width: 100%;

}

.navbar li {
  padding: 10px;
}

.navbar li:hover {
  background-color: rgba(19, 22, 26, 0.7);
}

.description {
  padding: 0 30px;
  display: flex;
  justify-content: space-between;
  text-align: center;
}

.description .quote p {
  color: white;
  padding-top: 150px;
  padding-right: 20px;
  font-family: "Alfa Slab One";
  text-transform: uppercase;
  font-size: 20px;
  overflow: hidden;
  white-space: nowrap;
  animation: typing 2.5s steps(38)forwards;

}

.description .quote p::after {
  content: "";
  position: absolute;
  display: block;
  height: 100%;
  width: 1px;
  background: #dadada;
  right: 0;
  top: 0;
  animation: cursorr 1s steps(1, end) 2.5s 1 forwards;
  ;
}



@keyframes typing {
  from {
    width: 0;
  }

  to {
    width: 100%;
  }

}

@keyframes cursorr {
  0% {
    opacity: 1;
  }

  50% {
    opacity: 0;
  }

  100% {
    opacity: 0;
  }
}



/* Bootom section */

.about {
  padding: 30px 20px;

}

.about p {
  line-height: 1.5rem;
  text-align: justify;
  font-size: 20px;
}


.content {
  display: flex;
  justify-content: space-between;
  text-align: center;
  flex-wrap: wrap;
  gap: 20px;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
  line-height: 2.5rem;
}




.content h4 {
  text-transform: uppercase;
}

.collapse {
  background-color: #000;
  color: white;
  cursor: pointer;
  padding: 18px;
  width: 100%;
  border: none;
  text-align: left;
  outline: none;
  font-size: 50px;
  text-transform: uppercase;
}

.collapse:after {
  content: '\002B';
  font-size: 13px;
  color: white;
  float: right;
  margin-left: 5px;
  font-size: 25px;

}

.active:after {
  content: "\2212";
}

.active,
.collapse:hover {
  background-color: #555;
}

a,
li {
  list-style: none;
  text-decoration: none;
  color: white;
}

/* Form */

.form-group {
  margin: 2rem 0;
}

.contacts input,
.content textarea {
  border: none;
  border-bottom: 1px white solid;
  width: 90%;
  padding-bottom: 1rem;
  background-color: black;

}

.contacts input::placeholder,
.contact textarea::placeholder {
  color: white;
  opacity: 1;
}

.contacts input:focus,
.contact textarea:focus {
  outline: none;
  /* Removes blue border */
  border-bottom: 1px solid white;
  /* Keeps your white bottom border */
  color: white;
  /* Makes typed text white */

}


.form-group .btn {
  display: inline-block;
  padding: 1rem 2rem;
  border: 1px solid;
  width: 50%;
  border-radius: 10px;
  font-size: 20px;
  cursor: pointer;
  transition: all 0.7s ease-in-out;

}

.form-group .btn:hover {
  background-color: #0056b3;
  width: 90%;

}

.visually-hidden {
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  height: 1px;
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
  width: 1px;

}

/* Media queries */

@media(max-width:768px) {
  .right-navbar ul {
    flex-direction: column;
    align-items: center;
    background-color: rgba(0, 0, 0, 0.8);
    gap: 10px;
    padding: 5px;
  }

  .right-navbar ul li {
    margin: 5px 0;
    padding: 5px 0;
    font-size: 18px;

  }

  .navbar {
    flex-direction: column;
    align-items: center;
    width: 100%;


  }

  .navbar li:hover {
    background-color: #555;
    width: 100%;

  }

  .description .quote p {
    padding-top: 50px;
    font-size: 15px;
    text-align: center;
  }

  .collapse {
    font-size: 30px;
  }

  .form-group .btn {
    width: 100%;
  }

  .about p {
    line-height: 1.2rem;
    text-align: justify;
    font-size: 15px;
    word-spacing: 1px;
  }


}
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.7.2/css/all.min.css" integrity="sha512Evv84Mr4kqVGRNSgIGL/F/aIDqQb7xQ2vcrdIwxfjThSH8CSR7PBEakCr51Ck+w+/U6swU2Im1vVX0SVk9ABhg==" crossorigin="anonymous" referrerpolicy="no-referrer" />
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Open+Sans:ital,wght@0,300..800;1,300..800&display=swap" rel="stylesheet">
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Alfa+Slab+One&family=Open+Sans:ital,wght@0,300..800;1,300..800&display=swap" rel="stylesheet">

<div class="top-section">
  <header class="header">
    <nav class="navbar">
      <div class="right-navbar">
        <ul>
          <li><a href="#about-me">About</a></li>
          <li><a href="#skills">Skills</a></li>
          <li><a href="#projects">Project</a></li>
          <li><a href ="#contact" class="btn">Contact</a></li>
        </ul>
      </div>

    </nav>
    <section class="description">
      <div class="name">
        <ul>
          <li><a href=""></a></li>
          <li><a href=""></a></li>
        </ul>
      </div>
      <div class="quote">
        <p>I don't develop, I engineer Solutions.</p>
      </div>

    </section>


  </header>
</div>

<!-- bottom section after the picture -->

<div class="bottom-section">
  <div class="about" id="about-me">
    <h3>About Me</h3>
    <p>I am Yannick, A highly motivated and inquisitive problem-solver. I leverage the power of Information Technology to architect, sustain, and optimise innovative solutions.
      My core competencies encompass the full lifecycle of applications development and maintenance, complemented by a robust understanding of data-centric disciplines including Data-Science, Analysis, and Engineering. </p>
  </div>
  <!-- Horizontal sections -->

  <section class="hori-box skill" id="skills">
    <button type="button" class="collapse">skills glimpse</button>
    <div class="content-1">
      <div class="box database">
        <h4>Programming</h4>
        <ul>
          <li>
            <p>Python</p>
          </li>
          <li>
            <p>Javascript</p>
          </li>
          <li>
            <p>C#</p>
          </li>
          <li>
            <p>HTML & CSS</p>
          </li>
          <li>
            <p>Linux/Unix</p>
          </li>
        </ul>
      </div>
      <div class="box programming">
        <h4>Databases DBMS</h4>
        <ul>
          <li>
            <p>T-SQL/PL-SQL</p>
          </li>
          <li>
            <p>Mongo DB</p>
          </li>
          <li>
            <p>MariaDB</p>
          </li>
          <li>
            <p>Hbase</p>
          </li>
          <li>
            <p>BigQuery</p>
          </li>
        </ul>


      </div>
      <div class="box machine-learning">
        <h4>Machine-Learning</h4>
        <ul>
          <li>
            <p>Regressions</p>
          </li>
          <li>
            <p>Random Forests</p>
          </li>
          <li>
            <p>Apriori</p>
          </li>
          <li>
            <p>K-Nearest neighbours</p>
          </li>
          <li>
            <p>Backpropafation</p>
          </li>
          <li>
            <p>RNN</p>
          </li>
          <li>
            <p>LSTM</p>
          </li>
          <li>
            <p>Statistics Inference</p>
          </li>
          <li>
            <p></p>
          </li>
        </ul>


      </div>
      <div class="box methodology">
        <h4>Methodology</h4>
        <ul>
          <li>
            <p>Agile</p>
          </li>
          <li>
            <p>DevOps</p>
          </li>
        </ul>


      </div>
      <div class="box others">
        <h4>Others</h4>
        <ul>
          <li>
            <p>Tableau/Power BI</p>
          </li>
          <li>
            <p>Databricks</p>
          </li>
          <li>
            <p>Flask/.Net</p>
          </li>
          <li>
            <p>Gitlab</p>
          </li>
          <li>
            <p>Ansible/Jenkins</p>
          </li>
          <li>
            <p>Docker</p>
          </li>
          <li>
            <p>Kubernetes</p>
          </li>
          <li>
            <p>React/EprssJS</p>
          </li>
        </ul>
      </div>
    </div>
  </section>
  <section class="hori-box project" id="projects">
    <button type="button" class="collapse">Projects</button>
    <div class="content-2">
      <ul>
        <li><a href="">Web</a></li>
        <li><a href="">Data Science</a></li>
        <li><a href="">Data Engineering</a></li>
        <li><a href="">DevOps</a></li>
      </ul>
    </div>
  </section>
  <section class="hori-box contacts" id="contact">
    <button type="button" class="collapse">Get in touch</button>
    <div class="content-3">
      <form>
        <div class="form-group">
          <label for="first-name" class="visually-hidden">First Name</label>
          <input type="text"
                        id="first-name"
                        name="first-name"
                        placeholder="First Name">
        </div>
        <div class="form-group">
          <label for="last-name" class="visually-hidden">Last Name</label>
          <input type="text"
                        id="last-name"
                        name="last-name"
                        placeholder="Last Name">
        </div>
        <div class="form-group">
          <label for="Email" class="visually-hidden">Email Address</label>
          <input type="email"
                        id="Email"
                        name="Email"
                        placeholder="Email Address">
        </div>
        <div class="form-group">
          <label for="message" class="visually-hidden">Message</label>
          <textarea
                        id="message"
                        name="message"
                        placeholder="Message">  </textarea>
        </div>
        <div class="form-group">
          <button type="submit" class="btn">Send Message</button>
        </div>


      </form>

    </div>

  </section>

</div>
<footer>

</footer>


Solution

  • Here is the new script I have:

    document.addEventListener("DOMContentLoaded", function () {
    var coll = document.getElementsByClassName("collapse");
    
    for (var i = 0; i < coll.length; i++) {
      coll[i].addEventListener("click", function () {
      var content = this.nextElementSibling;
      content.classList.toggle("show");
    });
    }
    });
    

    This got me the display I wanted. then I changed the CSS to:

    .content-1,
    .content-2,
    .content-3 {
    display: none;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: space-between;
    text-align: center;
    }
    
    .content-1.show,
    .content-2.show,
    .content-3.show {
    display: flex;
    }