问显示固定位置元素中的所有内容

EN

#about {
  height: 100vh;
  margin-top: 170px;
  position: fixed;
}

#about {
  height: calc(100vh - 170px);
  overflow: auto;
  margin-top: 170px;
  position: fixed;
}

var accordions = document.getElementsByClassName("accordion");
var i;

for (i = 0; i < accordions.length; i++) {
  accordions[i].addEventListener("click", function() {
    var patt = /(accordion-)(\d)/gm;
    var match = patt.exec(this.id);
    panel = document.getElementById("panel-" + match[2]);

    if (panel.style.maxHeight) {
      panel.style.maxHeight = null;
    } else {
      panels = document.getElementsByClassName('panel');
      for (j = 0; j < panels.length; j++) {
        if (panels[j].id != panel.id) {
          panels[j].style.maxHeight = null;
          if (accordions[j].id != this.id)
            accordions[j].classList.remove('active');
        }
      }
      panel.style.maxHeight = panel.scrollHeight + "px";
    }

    this.classList.toggle("active");
  });
}

body {
  margin: 0;
  background-color: black;
}

.title {
  text-align: center;
  background-color: white;
  color: black;
  height: 100px;
  padding: 35px 0;
  margin: 0;
  width: 100%;
  z-index: 1;
  position: fixed;
  font-family: Clearface, sans-serif;
  /* Here you may change the name of the font family of the Header Title*/
  font-size: 40px;
  /* Here you may change the font size of the Header Title*/
}

.header #accordion-0 {
  font-size: 25px;
}

#about {
  background-color: black;
  color: white;
  float: left;
  width: 50%;
  /* height: 100vh; */
  height: calc(100vh - 170px);  /* new */
  overflow: auto;               /* new */
  font-family: Clearface, sans-serif;
  margin-top: 170px;
  position: fixed;
}

#about h2 {
  font-size: 80px;
  /* Here you may change the font size of the About Title in desktop*/
  padding: 30px 70px 0 70px;
}

#about p {
  font-size: 30px;
  /* Here you may change the font size of the About Paragraph in desktop*/
  padding: 70px;
  padding-top: 0;
}

#projects .accordion {
  background-color: #333648;
  color: white;
  cursor: pointer;
  padding: 20px;
  width: 100%;
  border: none;
  text-align: center;
  outline: none;
  font-size: 17px;
  transition: 0.5s;
  height: 20%;
  font-family: 'Univers LT Std', sans-serif;
  /* Here you may change the name of the font family of Each Project Link*/
  font-size: 20px;
  /* Here you may change the font size of Each Project Link*/
  opacity: 0.7;
}

#projects .active,
#projects .accordion:hover {
  background-color: #ccc;
  color: black;
  opacity: 1;
}

.panel {
  padding: 0 18px;
  background-color: white;
  max-height: 0;
  overflow-y: hidden;
  transition: max-height 0.3s ease-out;
}

.post {
  padding: 0 20%;
}

.img-responsive {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 50px auto;
}

#projects {
  float: right;
  width: 50%;
  height: calc( 100vh - 170px); /* adjustment */
  overflow: auto;                /* new */
  font-family: 'Univers LT Std', sans-serif;
  /* Here you may change the name of the font family of Each Project*/
  font-size: 20px;
  /* Here you may change the font size of Each Project*/
  margin-top: 170px;
}

#about-accordion h2,
#about-accordion p {
  font-family: Clearface, sans-serif;
}

#about-accordion .panel {
  background-color: black;
  color: white;
}

#about-accordion {
  font-size: 30px;
  /* Here you may change the font size of About Section in mobile*/
}


/* Smartphones (portrait and landscape) ----------- */

@media only screen and (min-device-width: 320px) and (max-device-width: 480px) {
  .header #accordion-0 {
    padding-right: 1em;
  }
  #emma-back {
    padding-left: 1em;
  }
  #about {
    display: none;
  }
  #projects {
    width: 100%;
  }
  .title {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
}


/* iPads (portrait and landscape) ----------- */

@media only screen and (min-device-width: 768px) and (max-device-width: 1024px) {
  #about {
    display: none;
  }
  #projects {
    width: 100%;
  }
  .title {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  .header #accordion-0 {
    padding-right: 1em;
  }
  #emma-back {
    padding-left: 1em;
  }
}


/* Desktops and laptops ----------- */

@media only screen and (min-width: 1224px) {
  #about-accordion {
    display: none;
  }
  .header #accordion-0 {
    display: none;
  }
  #dash {
    display: none;
  }
}


/* Large screens ----------- */

@media only screen and (min-width: 1824px) {
  #about-accordion {
    display: none;
  }
  .header #accordion-0 {
    display: none;
  }
  #dash {
    display: none;
  }
}

<h1 class="header title">
  <span id="emma-back"> Hello <br> Back </span>
  <span id="dash"> - </span>
  <span id="accordion-0" class="accordion">About Me</span>
</h1>

<div id="about">
  <h2>
    Hello!
  </h2>

  <p>
    Lorem Ipsum är en utfyllnadstext från tryck- och förlagsindustrin. Lorem ipsum har varit standard ända sedan 1500-talet, när en okänd boksättare tog att antal bokstäver och blandade dem för att göra ett provexemplar av en bok. Lorem ipsum har inte bara
    överlevt fem århundraden, utan även övergången till elektronisk typografi utan större förändringar. Det blev allmänt känt på 1960-talet i samband med lanseringen av Letraset-ark med avsnitt av Lorem Ipsum, och senare med mjukvaror som Aldus PageMaker.
  </p>
</div>

<div id="projects">
  <div id="about-accordion">
    <div id="panel-0" class="panel">
      <div class="post">
        <h2>
          Hello!
        </h2>

        <p>
          Lorem Ipsum är en utfyllnadstext från tryck- och förlagsindustrin. Lorem ipsum har varit standard ända sedan 1500-talet, när en okänd boksättare tog att antal bokstäver och blandade dem för att göra ett provexemplar av en bok. Lorem ipsum har inte bara
          överlevt fem århundraden, utan även övergången till elektronisk typografi utan större förändringar. Det blev allmänt känt på 1960-talet i samband med lanseringen av Letraset-ark med avsnitt av Lorem Ipsum, och senare med mjukvaror som Aldus
          PageMaker.
        </p>
      </div>
    </div>
  </div>
  <button id="accordion-1" class="accordion">Project 1</button>
  <div id="panel-1" class="panel">
    <div class="post">
      <h2>TITLE HEADING</h2>
      <p>
        Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has
        survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
        publishing software like Aldus PageMaker including versions of Lorem Ipsum.
      </p>
      <div>
        <img src="images/placeholder.jpg" class="img-responsive">
        <img src="images/placeholder.jpg" class="img-responsive">
        <img src="images/placeholder.jpg" class="img-responsive">
      </div>
    </div>
  </div>

  <button id="accordion-2" class="accordion">Project 2</button>
  <div id="panel-2" class="panel">
    <div class="post">
      <h2>TITLE HEADING</h2>
      <p>
        Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has
        survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
        publishing software like Aldus PageMaker including versions of Lorem Ipsum.


      </p>
      <div>
        <img src="images/placeholder.jpg" class="img-responsive">
        <img src="images/placeholder.jpg" class="img-responsive">
        <img src="images/placeholder.jpg" class="img-responsive">
      </div>
    </div>
  </div>

  <button id="accordion-3" class="accordion">Project 3</button>
  <div id="panel-3" class="panel">
    <div class="post">
      <h2>TITLE HEADING</h2>
      <p>
        Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has
        survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
        publishing software like Aldus PageMaker including versions of Lorem Ipsum.


      </p>
      <div>
        <img src="images/placeholder.jpg" class="img-responsive">
        <img src="images/placeholder.jpg" class="img-responsive">
        <img src="images/placeholder.jpg" class="img-responsive">
      </div>
    </div>
  </div>

  <button id="accordion-4" class="accordion">Project 4</button>
  <div id="panel-4" class="panel">
    <div class="post">
      <h2>TITLE HEADING</h2>
      <p>
        Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has
        survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
        publishing software like Aldus PageMaker including versions of Lorem Ipsum.


      </p>
      <div>
        <img src="images/placeholder.jpg" class="img-responsive">
        <img src="images/placeholder.jpg" class="img-responsive">
        <img src="images/placeholder.jpg" class="img-responsive">
      </div>
    </div>
  </div>

  <button id="accordion-5" class="accordion">Project 5</button>
  <div id="panel-5" class="panel">
    <div class="post">
      <h2>TITLE HEADING</h2>
      <p>
        Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has
        survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
        publishing software like Aldus PageMaker including versions of Lorem Ipsum.


      </p>
      <div>
        <img src="images/placeholder.jpg" class="img-responsive">
        <img src="images/placeholder.jpg" class="img-responsive">
        <img src="images/placeholder.jpg" class="img-responsive">
      </div>
    </div>
  </div>
</div>