
    Design a function that calculates the total border length of a square-shaped learning module interface, where the input represents the interface's side length in pixels, to ensure optimal content visibility for students with different learning paces. The border length will help determine the maximum displayable content while maintaining proper spacing and readability for individual student needs.
    

    
def square_perimeter(a):
    """
    Design a function that calculates the total border length of a square-shaped learning module interface, where the input represents the interface's side length in pixels, to ensure optimal content visibility for students with different learning paces. The border length will help determine the maximum displayable content while maintaining proper spacing and readability for individual student needs.
    

    """
def square_perimeter(a):
    """
    Design a function that calculates the total border length of a square-shaped learning module interface, where the input represents the interface's side length in pixels, to ensure optimal content visibility for students with different learning paces. The border length will help determine the maximum displayable content while maintaining proper spacing and readability for individual student needs.
    

    """
    perimeter = 4 * a
    return perimeter