<!DOCTYPE html>
<html lang="en">
<head>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
<p class="gsap-reveal-hero heading">1</p>
<p class="gsap-reveal-hero heading">2</p>
<p class="gsap-reveal-hero heading">3</p>
<p class="gsap-reveal-hero heading">4</p>
</body>
<style>
    .gsap-reveal-hero{
        color: blueviolet;
    }
</style>
<script>
    let heading = Array.from(document.querySelectorAll('.heading'))
    document.addEventListener('DOMContentLoaded', function () {
   heading.forEach(function(item){
        if (window.innerWidth < 767) {
       item.classList.remove('gsap-reveal-hero');
    } else {
        item.classList.add('gsap-reveal-hero');
    }
    })
});
</script>
</html><!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <img id="1" alt="" src="" class="ct-image img-proect" href="site.com">
<img id="2" alt="" src="" class="ct-image img-proect" href="">
<img id="3" alt="" src="" class="ct-image img-proect" href="">
</body>
<style>
    .ct-image{
        width: 100px;
        height: 100px;
        background: #000;
    }
</style>
<script>
    let img = Array.from(document.querySelectorAll('.ct-image'))
    img.forEach(function(itm){
if(itm.getAttribute('href') === ""){
    itm.style.display = "none"
}
    })
</script>
</html><!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div class="hat">
        <div><p>Main</p>
        <p>Contacts</p>
        <p>Shop</p></div>
    
    <div>
        <button>JustBtn1</button>
        <button>JustBtn1</button>
    </div>
    </div>
    <button class="around">space-around</button>
    <button class="between">space-between</button>
    <button class="evenly">space-evenly</button>
</body>
<style>
    *{
        margin: 0;
        padding: 0;
    }
    .hat{
        width: 100%;
        height: 80px;
        display: flex;
        
        background: rgb(255, 124, 124);
        align-items: center;
        justify-content: space-between;
            }
            .hat div{
                display: flex;
                width: 200px;
                justify-content: space-around;
            }
</style>
<script>
    let hat = document.querySelector('.hat')
    let between = document.querySelector('.between')  
     let around = document.querySelector('.around')  
      let evenly = document.querySelector('.evenly')
      between.onclick = function(){
          hat.style.justifyContent = 'space-between'
      }
      around.onclick = function(){
          hat.style.justifyContent = 'space-around'
      }
      evenly.onclick = function(){
          hat.style.justifyContent = 'space-evenly'
      }
</script>
</html> 
      <!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
 <button class="btn">Нажата 1</button>
 <button class="btn">Нажата 2</button>
 <button class="btn">Нажата 3</button>
 <button class="btn">Нажата 4</button>
 <button class="btn">Нажата 5</button>
 <button class="btn">Нажата 6</button>
 <button class="btn">Нажата 7</button>
 <button class="btn">Нажата 8</button>
 <button class="btn">Нажата 9</button>
</body>
<script>
    let btns = Array.from(document.querySelectorAll('.btn'))
    btns.forEach(function(itm){
itm.onclick = function(){
    alert(itm.innerHTML)
}
    })
</script>
</html><!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <input type="text" class="inp">
    <button class="btn">Сохранить</button>
    <button class="btn1">Вывести</button>
    <p>То, что получилось: <span class="res"></span></p>
</body>
<script>
    let btn = document.querySelector('.btn')
    let res = document.querySelector('.res')
    let btn1 = document.querySelector('.btn1')
    let inp = document.querySelector('.inp')
 
    btn.onclick = function(){
        localStorage.setItem("itm", inp.value)
   
    }
    btn1.onclick = function(){
     
        res.innerHTML = localStorage.getItem("itm")
    }
    res.innerHTML = localStorage.getItem("itm")
</script>
</html>