Setting contenteditable equal to true restricts the width of an element even when "white-space:pre" is set. You can see an example below (you may need to
resize your browser to see the effect).
In IE9 and FireFox10, the width of the element is not restricted.
With contenteditable set to true:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
/\ \ / /\ / /\ /\ \ / /\ /\ \ / /\ / /\ /\ \ /\ \ / /\ /\ \ / /\ /\ \ /\ \
\_\ \ / / / / / / \ \ \ / / \ \ \ \ / / \ / / \ \_\ \ / \ \ / / \ \_\ \ / / \ / \ \ / \ \
/\__ \ / /_/ / / / /\ \_\ / / /\ \__ /\ \_\ / / /\ \__ / / /\ \ /\__ \ / /\ \ \ / / /\ \__ /\__ \ /_/ /\ \ / /\ \ \ / /\ \ \
/ /_ \ \ / /\ \__/ / / / /\/_/ / / /\ \___\ / /\/_/ / / /\ \___\ / / /\ \ \ / /_ \ \ / / /\ \_\ / / /\ \___\ / /_ \ \ \_\/\ \ \ \/_/\ \ \ / / /\ \ \
/ / /\ \ \ / /\ \___\/ / / / / \ \ \ \/___/ / / / \ \ \ \/___/ / / / \ \ \ / / /\ \ \ / /_/_ \/_/ \ \ \ \/___// / /\ \ \ \ \ \ / / / \/_//_\ \ \
/ / / \/_// / /\/___/ / / / / \ \ \ / / / \ \ \ / / /___/ /\ \ / / / \/_// /____/\ \ \ \ / / / \/_/ \ \ \ / / / __\___ \ \
/ / / / / / / / / / / / _ \ \ \ / / / _ \ \ \ / / /_____/ /\ \ / / / / /\____\/ _ \ \ \ / / / \ \ \ / / / _ / /\ \ \ \
/ / / / / / / / /___/ / /__ /_/\__/ / / ___/ / /__ /_/\__/ / / / /_________/\ \ \ / / / / / /______ /_/\__/ / / / / / __\ \ \___ / / /_/\_\ / /_/____\ \ \
/_/ / / / / / / //\__\/_/___\\ \/___/ / /\__\/_/___\\ \/___/ / / / /_ __\ \_\ /_/ / / / /_______\\ \/___/ / /_/ / /___\_\/__/\/ /_____/ //__________\ \ \
\_\/ \/_/ \/_/ \/_________/ \_____\/ \/_________/ \_____\/ \_\___\ /____/_/ \_\/ \/__________/ \_____\/ \_\/ \_________\/\________/ \_____________\/
Some random text here
With contenteditable set to false:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
/\ \ / /\ / /\ /\ \ / /\ /\ \ / /\ / /\ /\ \ /\ \ / /\ /\ \ / /\ /\ \ /\ \
\_\ \ / / / / / / \ \ \ / / \ \ \ \ / / \ / / \ \_\ \ / \ \ / / \ \_\ \ / / \ / \ \ / \ \
/\__ \ / /_/ / / / /\ \_\ / / /\ \__ /\ \_\ / / /\ \__ / / /\ \ /\__ \ / /\ \ \ / / /\ \__ /\__ \ /_/ /\ \ / /\ \ \ / /\ \ \
/ /_ \ \ / /\ \__/ / / / /\/_/ / / /\ \___\ / /\/_/ / / /\ \___\ / / /\ \ \ / /_ \ \ / / /\ \_\ / / /\ \___\ / /_ \ \ \_\/\ \ \ \/_/\ \ \ / / /\ \ \
/ / /\ \ \ / /\ \___\/ / / / / \ \ \ \/___/ / / / \ \ \ \/___/ / / / \ \ \ / / /\ \ \ / /_/_ \/_/ \ \ \ \/___// / /\ \ \ \ \ \ / / / \/_//_\ \ \
/ / / \/_// / /\/___/ / / / / \ \ \ / / / \ \ \ / / /___/ /\ \ / / / \/_// /____/\ \ \ \ / / / \/_/ \ \ \ / / / __\___ \ \
/ / / / / / / / / / / / _ \ \ \ / / / _ \ \ \ / / /_____/ /\ \ / / / / /\____\/ _ \ \ \ / / / \ \ \ / / / _ / /\ \ \ \
/ / / / / / / / /___/ / /__ /_/\__/ / / ___/ / /__ /_/\__/ / / / /_________/\ \ \ / / / / / /______ /_/\__/ / / / / / __\ \ \___ / / /_/\_\ / /_/____\ \ \
/_/ / / / / / / //\__\/_/___\\ \/___/ / /\__\/_/___\\ \/___/ / / / /_ __\ \_\ /_/ / / / /_______\\ \/___/ / /_/ / /___\_\/__/\/ /_____/ //__________\ \ \
\_\/ \/_/ \/_/ \/_________/ \_____\/ \/_________/ \_____\/ \_\___\ /____/_/ \_\/ \/__________/ \_____\/ \_\/ \_________\/\________/ \_____________\/
Some random text here