JSFiddle - React, Tailwind, and code Playground

HTML

<input type="checkbox" id="show"/>
<label for="show">Заказать вопрос</label>
<form>
    Ваша форма здесь.
</form>

CSS

* {
    padding: 0;
    margin: 0;
}
body {
    font-family: Arial;
}
input {
    display: none;
}
label {
    transform: rotate(90deg);
	transform-origin: left bottom;
    display: block;
    float: left;
    height: 20px;
    padding: 10px;
    border-radius: 0 0 10px 10px; 
    color: white;
    background: red;
    position: absolute;
}
form {
    background: blue;
    width: 200px;
    float: left;
    margin-left: 40px;
    color: white;
    padding: 10px;
    border-radius: 10px 0 0 10px;
    height: 300px;
    display: none;
}
input:checked ~ form {
    display: block;
}