Which CSS method is best for styling multiple pages on a website?

A load of 12 kN is applied through a pin connection and a square bearing plate to the end of a beam that has a rectangular cross section. The base of the beam’s cross section is 84 mm and the height is 160 mm. The size of the bearing plate is 100 mm. Determine the bearing stress between the plate and the beam.

A load of 17 kN is applied through a pin connection and a square bearing plate to the end of a beam that has a rectangular cross section. The base of the beam’s cross section is 90 mm and the height is 170 mm. The size of the bearing plate is 104 mm. Determine the bearing stress between the plate and the beam.

Write HTML for a website menu using a semantic element and an unordered list containing links to html pages for Home, About, and Contact. The menu should include a class that could be used for CSS styling. Enter your code directly in the answer box provided using the Preformatted text option.

Before an automotive engine is started, its timing belt has a length of 41.00 in. and a temperature of 70°F. At the engine operating temperature of 200°F, it is determined that the belt has elongated to 41.04 in. What is the coefficient of thermal expansion of the belt?

The rigid beam BC is supported by rods (1) and (2). For a uniformly distributed load of w = 3.9 kN/m, determine the force in rod (1). Assume a = 3.60 m and L = 5.20 m.

The rigid beam BC is supported by rods (1) and (2). For a uniformly distributed load of w = 2.3 kN/m, determine the force in rod (1). Assume a = 3.60 m and L = 5.70 m.

Rigid pipe (2) is supported by a pin connection at C and tie rod (1). The structure supports a load P = 13 kN at pin B. Assume x1 = 3.7 m, x2 = 2.5 m, and y1 = 3.4 m. Determine the force in tie rod (1).

A steel [E = 210 GPa, ν = 0.292] rod with a circular cross section is used as a weight hanger. The straight part of the rod is 145-mm long and has a diameter of 4.9 mm. Determine the magnitude of the lateral strain in this portion of the rod when it supports a tensile load of 7.8 N.

What CSS property activates Flexbox on an element?