Some methods and practices for implementing no scroll bars in CSS

In front-end development, scroll bars are a very common element. In the web pages we usually see, scroll bars appear on almost every page. But in some cases, we may encounter some pages without scroll bars, which is not a bug but a design choice. In this article, we will explore some methods and practices to achieve no scrollbars in CSS.

1. Hide the scroll bar

The most common method is to hide the scroll bar through CSS. CSS provides many properties to control the style of the scroll bar. We can use some new properties of CSS3 to achieve this effect. Taking the webkit browser as an example, we can do this:

body::-webkit-scrollbar { display: none; }

This can hide the entire scroll bar, but it may not work in other browsers. If you need to use this method in multiple browsers, you can add the following code:

html { overflow: -moz-scrollbars-none; }
html {-ms-overflow-style: none;}
html { overflow: -webkit-scrollbar; }
html::-webkit-scrollbar { display: none; }

2. Overlay scrollbar

Sometimes, we need to keep the scrollbar, But use styles to integrate it with the page to achieve a more natural effect. This requires some skills.

First, we need to define a container and limit it to a fixed size:

.container {
  width: 100%;
  height: 500px;
  overflow: auto;
}

Then, we will define two child elements inside the container, one being the actual container for the content , and the other as a scroll bar:

<div class="container">
  <div class="content"></div>
  <div class="scrollbar"></div>
</div>

Next we need to place the scroll bar in the correct position. Implemented through CSS positioning.

.scrollbar {
  position: fixed;
  top: 0;
  right: 0;
  width: 8px;
  height: 100%;
  background-color: #d3d3d3;
  opacity: 0;
  transition: opacity 0.2s;
}

Next, you need to add a mouse wheel event listener to the container and update the position of the scroll bar.

$('.container').bind('scroll', function() {
  updateScrollbar();
})

function updateScrollbar() {
  var scrollRatio = $('.container').scrollTop() / ($('.content').height() - $('.container').height());
  var topPosition = scrollRatio * ($('.container').height() - $('.scrollbar').height());
  $('.scrollbar').css('top', topPosition);
}

3. Not using scroll bars

In addition to making the scroll bars disappear or be integrated, we can also use other methods, such as page changes or flip effects.

Page change effect:

Place a hidden content on a fixed panel, and use CSS animation to slide it into the visible area when the scroll point is reached.

.panel {
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
}

.hiddenContent {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: 100%;
  overflow: auto;
  padding-right: 17px;
  box-sizing: content-box;
  transition: transform 0.5s ease-in-out;
}

.panel.active .hiddenContent {
  transform: translateY(-100%);
}

Flip effect:

By adding a container and using the perspective property, the content is rotated in three-dimensional space.

.container {
  height: 100%;
  perspective: 1000px;
}

.content {
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.5s;
}

.content.inverted {
  transform: rotateX(180deg);
}

$('.container').on('scroll', function() {
  if ($('.container').scrollTop() >= $('.content').height() / 2) {
    $('.content').addClass('inverted');
  } else {
    $('.content').removeClass('inverted');
  }
})

Summary:

In this article, we explored ways to achieve no scrollbars in CSS and used some practices to apply these methods. No matter which method you use, there's a trade-off between visual simplicity and user experience, and choose what works best for you based on your design.

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