<!DOCTYPE html>
<html>
<head>
<style>
.container {
max-width: 1200px;
margin: 0 auto;
padding: 20px;
}
.form {
margin-bottom: 20px;
}
.form input,
.form textarea {
width: 100%;
margin-bottom: 10px;
padding: 5px;
}
.form button {
background: red;
color: white;
border: none;
padding: 5px 20px;
cursor: pointer;
}
.cards {
display: flex;
gap: 20px;
}
.card {
flex: 1;
border: 2px solid red;
height: 300px;
}
</style>
</head>
<body>
<div class="container">
<form class="form">
<input type="text" placeholder="Имя">
<textarea placeholder="Сообщение"></textarea>
<button type="submit">Отправить</button>
</form>
<div class="cards">
<div class="card"></div>
<div class="card"></div>
<div class="card"></div>
</div>
</div>
</body>
</html>