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I was trying to make an image slider. After two days of headache, I found that I was missing 'name' attribute from input tag in html. what does it has to do with the whole slider? It just gives name to the input tag. OR is it something else? I tried to google it but couldn't find an appropriate answer.

I have provided both html and CSS. Just remove the name attribute below and please tell me more about this.

What I have tried:


<!doctype html>
<html lang="">

    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="levore2.css">


    <div id="landing_page">

            <a><img src="Levore images/levore-web.png"></a>

                <li><a href="">Home</a></li>
                <li><a href="">Products</a></li>
                <li><a href="">About</a></li>
                <li><a href="">Contact</a></li>
                <li><a href="" id="account_a">Account</a></li>
        <div class="container">
            <div class="slider">

                <input type="radio" name="r" id="r1" checked>
                <input type="radio" name="r" id="r2">
                <input type="radio" name="r" id="r3">

                <!-- slider 1 -->
                <div class="slide" id="slide1">
                    <img src="image/1.jpg">

                <!-- slider 2 -->
                <div class="slide" id="slide2">
                    <img src="image/2.jpg">

                <!-- slider 3 -->
                <div class="slide" id="slide3">
                    <img src="image/3.jpg">
            <div class="sliding_buttons">
                <label for="r1"></label>
                <label for="r2"></label>
                <label for="r3"></label>



@font-face {
  font-family: HelveticaNeue-lightweight;
  src: url(Fonts/Helvetica_Neue_LT_55_Roman.ttf);
  font-weight: 100px;
  font-style: lightweight;
@font-face {
  font-family: HelveticaNeue;
  src: url(fonts/HelveticaNeue-Medium.otf);
  font-weight: 200px;

* {
  padding: 0px;
  margin: 0px;
.Landing_Page {
  display: flex;
  height: 100vh;
  width: 100%;
nav {
  height: 5.5vh;
  width: 100%;
  display: flex;
  position: fixed;

  background-color: black;
  align-items: center;
  justify-content: space-between;

/* Logo */
nav a {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  padding-left: 5%;
nav a img {
  height: 80%;

/* navigation tabs */
ul {
  list-style-type: none;
  padding-right: 5%;
ul li {
  display: inline-block;
  padding: 0px 20px;
ul li a {
  color: white;
  text-decoration: none;
  font-family: HelveticaNeue-lightweight;
  font-size: 19px;
#account_a {
  padding-right: 0px;

/* slider */
.container {
  top: 7.5vh;
  position: relative;
  overflow: hidden;
  width: 93%;
  height: 90vh;
  border: 10px solid green;
  left: 50%;
  transform: translateX(-50%);

input {
  display: none;

.slider {
  height: 100%;
  width: 300%;
  display: flex;
  border: 10px solid red;
.slide {
  width: 33.34%;
  transition: 0.6s;
.slide img {
  width: 100%;
.sliding_buttons {
  width: 100%;
  position: absolute;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  bottom: 0%;
  top: 30%;
.sliding_buttons label {
  height: 3%;
  width: 7%;
  margin: 10%;
  background-color: rgba(0, 0, 255, 0.507);
  cursor: pointer;
.sliding_buttons label:hover {
  background-color: rgb(165, 138, 138);

#r1:checked ~ #slide1 {
  margin-left: 0%;
#r2:checked ~ #slide1 {
  margin-left: -33.34%;
#r3:checked ~ #slide1 {
  margin-left: -66.67%;
Updated 16-Jul-21 2:44am

The answer depends on your Javascript, which you haven't shown.

But since you're using <input type="radio">, you need to give them a name to group them - only one radio with a particular name can be checked at once.

<input type="radio"> - HTML: HyperText Markup Language | MDN[^]
Have a look here: HTML input type="radio"[^]

There it is said:
The radio group must share the same name (the value of the name attribute) to be treated as a group. 

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