To make the input and textarea elements blend in with the background theme, set their background-color to #0a0a23. Then, give them a 1px, solid border with a color of #0a0a23.
When you have the border property and set values of that, all of its children are going to be invalid and set to default.
When you set values to “border” it is sufficient to give all the values in the same line.
Ex: border: 1px shape #color;