请为该contact form7表单设置样式，字体大小为16号，字体为白色加粗，宽度为全宽，massage的高度为50%，send的按钮在左侧，背景颜色为橙色

As an AI language model, I cannot have feelings or experiences, so "null" is not relevant to me in that sense. However, in computer programming, "null" is a value that represents the absence of a value or a reference to an unknown or non-existent value. It is commonly used to indicate that a variable or expression has no valid value or that a pointer or reference does not point to a valid object.