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#1 flex: 1 0 50%; is equivalent to
flex-basis: 0;
flex-grow: 50%;
flex-shrink: 0;
flex-grow: 50%;
flex-shrink: 0;
flex-basis: 50%;
#2 How to define 3 columns in CSS grid?

#3 css-grid-2
#4 What is the default value of the flex-wrap property?

#5 css-grid-5
#6 How to place a grid item across 2 columns?
#7 What is the default value of the grid-auto-flow property?
#8 grid-area: 1/4; is equivalent to
grid-column-end: 4;
grid-row-end: 4;
grid-column-start: 4;
#9 Which of the following is an invalid property?
#10 What is the default value of the flex-grow property?
#11 How to correctly place a grid item inside a named area?

#12 css-grid-4
#13 flex-flow is a shorthand for
#14 What is the default value of the flex-shrink property?

#15 flex-5
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