Дмитрий Марков

#container > div > a:hover > span {
    color: #3a3f5d;
    transition: 0.5s;
}

#container > div > a:hover > img {
    opacity: 1;
}

const formData1 = new FormData( document.getElementById('form1') );
const formData2 = new FormData( document.getElementById('form2') );
for(const [key, value] of formData2.entries()) {
    formData1.append(key, value)
}
return formData1;

<div class="wrapper">
            <h1 class="title">Заголовок</h1>
        </div>

.wrapper {
            position: relative;
            z-index: 0;
            display: flex;
            justify-content: center;
        }

        .wrapper:after {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            left: 0;
            right: 0;
            height: 1px;
            width: 100%;
            background-color: red;
            z-index: -1;
            margin: auto;
        }

        .title {
            background-color: #fff;
            padding: 0 10px;
        }

const inputs = document.querySelectorAll('.input');


if( inputs.length ) {

    const inputSelection = input => {
        input.type = 'text';
        input.setSelectionRange(0,0);
        input.type = 'number';
        input.blur();
    }

    inputs.forEach(input => {
        input.addEventListener('input', event => {
            if( input.value.length == input.maxLength ) inputSelection(input);
    
            if( input.value.length > input.maxLength ) {
                input.value = input.value.slice(0, input.maxLength);
                inputSelection(input);
            }
        });
    });

}

<div class="flex-wrapper" />
 <img src="левое.jpg">
 <p>lorem100</p>
 <img src="правое.jpg" />
</div>

.flex-wrapper {
 display:flex;
}
.flex-wrapper img {
 width: 200px;
 flex-shrink: 0;
}
.flex-wrapper p {
 flex-grow: 1;
}