CSS：当宽度较小时，如何不让立即加入框消失

I've tried setting width at max-width: 786px to container but it doesn't seem to affect it properly, but affects other elements as well.

@media (max-width : 768px) {
    .container {
        width: 768px;
        padding-top: 200px;
    }
}

我如何将文本容器“ David Kim ...利润过高的人”向下移动到967宽度（因此它不会遮住他的脸），并且不允许电子邮件加入框在767宽度下消失？

The site is at: https://davidkim.socialarts.com

非常感谢！